<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-3380</journal-id>
<journal-title><![CDATA[Revista bio ciencias]]></journal-title>
<abbrev-journal-title><![CDATA[Revista bio ciencias]]></abbrev-journal-title>
<issn>2007-3380</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Nayarit]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-33802023000100441</article-id>
<article-id pub-id-type="doi">10.15741/revbio.10.e1412</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Graphical-mathematical model to estimate CO2 concentration level as an indicator of SARS-CoV-2 transmission]]></article-title>
<article-title xml:lang="es"><![CDATA[Modelo gráfico-matemático para estimar el nivel de concentración de CO2 como indicador de la transmisión del SARS-CoV-2]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Razura-Carmona]]></surname>
<given-names><![CDATA[F. F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navidad-Murrieta]]></surname>
<given-names><![CDATA[M. S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barajas-Carrillo]]></surname>
<given-names><![CDATA[V.W.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Covantes-Rosales]]></surname>
<given-names><![CDATA[C.E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Resendiz]]></surname>
<given-names><![CDATA[K. J. G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toledo-Ibarra]]></surname>
<given-names><![CDATA[G. A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ventura-Ramón]]></surname>
<given-names><![CDATA[G. H.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ojeda-Durán]]></surname>
<given-names><![CDATA[A. J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Casas-Rodríguez]]></surname>
<given-names><![CDATA[J. O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Girón-Pérez]]></surname>
<given-names><![CDATA[M. I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nayarit Secretaría de Investigación y Posgrado Laboratorio Nacional para la Investigación en Inocuidad Alimentaria (LANIIA)-Unidad Nayarit.]]></institution>
<addr-line><![CDATA[Tepic Nayarit]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nayarit Dirección de Servicios Generales ]]></institution>
<addr-line><![CDATA[Tepic Nayarit]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>10</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-33802023000100441&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-33802023000100441&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-33802023000100441&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The first documented cases of Coronavirus disease of 2019 (COVID-19) in Wuhan city (Hubei province, China) were caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), studies mention viral transmission is more common in indoor and poorly ventilated environments compared to outdoor environments or environments with abundant airflow. In this context, this research aimed to estimate, through a mathematical model by a Box-Behnken design, the time and occupancy required in a physical space to reach CO2 levels that exceed the risk level established as a safer condition of 700 ppm for SARS-CoV-2 transmission. According to the proposed mathematical model, it is possible to predict safe conditions. With this, it was found that natural ventilation is the best option to reduce CO2 concentration, considering the occupancy/m3 and time, allowing a constant airflow; the use of air conditioners to control the temperature in rooms without natural ventilation is suggested; notwithstanding, these types of equipment are not designed to reduce CO2 concentration. Thus, their use in rooms with open windows and doors leads to a shorter equipment lifetime, for this reason, its operation in special conditions, such as in rooms without natural ventilation should be considered.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los primeros casos documentados de la enfermedad por Coronavirus de 2019 (COVID-19) en la ciudad de Wuhan (provincia de Hubei, China) fueron causados por el Síndrome Respiratorio Agudo Severo Coronavirus (SARS-CoV-2), los estudios mencionan que la transmisión viral es más común en interiores y en ambientes mal ventilados en comparación con espacios al aire libre o con abundante flujo de aire. En este contexto, esta investigación tuvo como objetivo estimar, a través de un modelo matemático (diseño de Box-Behnken), el tiempo y la ocupación requerida en un espacio físico para alcanzar niveles de CO2 que superen el nivel de riesgo establecido como condición segura de 700 ppm para la transmisión de SARS-CoV-2. Con esto, se encontró que la ventilación natural es la mejor opción para reducir la concentración de CO2, considerando la ocupación/m3 y el tiempo, permitiendo un flujo de aire constante; se sugiere el uso de aire acondicionado para controlar la temperatura en habitaciones sin ventilación natural; no obstante, este tipo de equipos no están diseñados para reducir la concentración de CO2. Por lo tanto, su uso en habitaciones con puertas y ventanas abiertas conduce a una vida útil más corta, por lo que se debe considerar su funcionamiento en condiciones especiales.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[dióxido de carbono]]></kwd>
<kwd lng="es"><![CDATA[modelo matemático]]></kwd>
<kwd lng="es"><![CDATA[calidad del aire]]></kwd>
<kwd lng="es"><![CDATA[ventilación]]></kwd>
<kwd lng="es"><![CDATA[ocupación]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[carbon dioxide]]></kwd>
<kwd lng="en"><![CDATA[mathematical model]]></kwd>
<kwd lng="en"><![CDATA[air quality]]></kwd>
<kwd lng="en"><![CDATA[ventilation]]></kwd>
<kwd lng="en"><![CDATA[occupancy]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ahmed]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Mumovic]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Bagkeris]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ucci]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Combined effects of ventilation rates and indoor temperatures on cognitive performance of female higher education students in a hot climate.]]></article-title>
<source><![CDATA[Indoor air]]></source>
<year>2022</year>
<volume>32</volume>
<numero>2</numero>
<issue>2</issue>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Azuma]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Yanagi]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
<name>
<surname><![CDATA[Kagi]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Ogata]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Hayashi]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Environmental factors involved in SARS-CoV-2 transmission: effect and role of indoor environmental quality in the strategy for COVID-19 infection control.]]></article-title>
<source><![CDATA[Environmental Health and Preventive Medicine]]></source>
<year>2020</year>
<volume>25</volume>
<page-range>1-16</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Belluco]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Mancin]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Marzoli]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Bortolami]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mazzetto]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Pezzuto]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Favretti]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Terregino]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Bonfante]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Piro]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence of SARS-CoV-2 RNA on inanimate surfaces: a systematic review and meta-analysis.]]></article-title>
<source><![CDATA[European Journal of Epidemiology]]></source>
<year>2021</year>
<volume>36</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>685-707</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Biryukov]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Boydston]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Dunning]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Yeager]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Wood]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Reese]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ferris]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Weaver]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Zeitouni]]></surname>
<given-names><![CDATA[N. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Increasing Temperature and Relative Humidity Accelerates Inactivation of SARS-CoV-2 on Surfaces.]]></article-title>
<source><![CDATA[MSphere]]></source>
<year>2020</year>
<volume>5</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>1-9</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chatterjee]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Murallidharan]]></surname>
<given-names><![CDATA[J. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Agrawal]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Bhardwaj]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Why coronavirus survives longer on impermeable than porous surfaces.]]></article-title>
<source><![CDATA[Physics of Fluids]]></source>
<year>2021</year>
<volume>33</volume>
<numero>2</numero>
<issue>2</issue>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chin]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Chu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Perera]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Hui]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Yen]]></surname>
<given-names><![CDATA[H. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Chan]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Peiris]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Poon]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Stability of SARS-CoV-2 in different environmental conditions.]]></article-title>
<source><![CDATA[Lancet]]></source>
<year>2020</year>
<volume>1</volume>
<numero>1</numero>
<edition>e10</edition>
<issue>1</issue>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Coldrick]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Kelsey]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ivings]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Foat]]></surname>
<given-names><![CDATA[T. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Parker]]></surname>
<given-names><![CDATA[S. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Noakes]]></surname>
<given-names><![CDATA[C. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Bennett]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Rickard]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Moore]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modeling and experimental study of dispersion and deposition of respiratory emissions with implications for disease transmission.]]></article-title>
<source><![CDATA[Indoor air]]></source>
<year>2022</year>
<volume>32</volume>
<numero>2</numero>
<issue>2</issue>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Corman]]></surname>
<given-names><![CDATA[V. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Landt]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Kaiser]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Molenkamp]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Meijer]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Chu]]></surname>
<given-names><![CDATA[D. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Detection of 2019 novel coronavirus (2019-nCoV) by real-time RT-PCR.]]></article-title>
<source><![CDATA[Eurosurveillance]]></source>
<year>2020</year>
<volume>25</volume>
<numero>3</numero>
<issue>3</issue>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Coyle]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Derk]]></surname>
<given-names><![CDATA[R. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Lindsley]]></surname>
<given-names><![CDATA[W. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Boots]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Blachere]]></surname>
<given-names><![CDATA[F. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Reynolds]]></surname>
<given-names><![CDATA[J. S.]]></given-names>
</name>
<name>
<surname><![CDATA[McKinney]]></surname>
<given-names><![CDATA[W. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Sinsel]]></surname>
<given-names><![CDATA[E. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Lemons]]></surname>
<given-names><![CDATA[A. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Beezhold]]></surname>
<given-names><![CDATA[D. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Noti]]></surname>
<given-names><![CDATA[J. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reduction of exposure to simulated respiratory aerosols using ventilation, physical distancing, and universal masking.]]></article-title>
<source><![CDATA[Indoor air]]></source>
<year>2021</year>
<volume>32</volume>
<numero>2</numero>
<issue>2</issue>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dai]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Association of the infection probability of COVID-19 with ventilation rates in confined spaces.]]></article-title>
<source><![CDATA[Building Simulation]]></source>
<year>2020</year>
<volume>13</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1321-7</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Di Gilio]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Palmisani]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Pulimeno]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Cerino]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Cacace]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Miani]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[de Gennaro]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[CO2 concentration monitoring inside educational buildings as a strategic tool to reduce the risk of Sars-CoV-2 airborne transmission.]]></article-title>
<source><![CDATA[Environmental Research]]></source>
<year>2021</year>
<volume>202</volume>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Girón-Pérez]]></surname>
<given-names><![CDATA[D. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruiz-Manzano]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Benitez-Trinidad]]></surname>
<given-names><![CDATA[A. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Ventura-Ramón]]></surname>
<given-names><![CDATA[G. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Covantes-Rosales]]></surname>
<given-names><![CDATA[C. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ojeda-Durán]]></surname>
<given-names><![CDATA[A. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Mercado-Salgado]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
<name>
<surname><![CDATA[Toledo-Ibarra]]></surname>
<given-names><![CDATA[G. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz-Reséndiz]]></surname>
<given-names><![CDATA[K. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Girón-Pérez]]></surname>
<given-names><![CDATA[M. I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Saliva Pooling Strategy for the Large-Scale Detection of SARS-CoV-2, Through Working-Groups Testing of Asymptomatic Subjects for Potential Applications in Different Workplaces.]]></article-title>
<source><![CDATA[Journal of Occupational and Environmental Medicine]]></source>
<year>2021</year>
<volume>63</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>541-547.</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="">
<collab>Johns Hopkins University &amp; Medicine. [Johns Hopkins University website].</collab>
<source><![CDATA[COVID-19 Dashboard. Coronavirus Resource Center.]]></source>
<year>2022</year>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kapaloa]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Me&#269;iarováa]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Vil&#269;ekováa]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Krídlová-Burdováa]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Domnitab]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Bacotiub]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Kinga-Eva]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Investigation of CO2 production depending on physical activity of students.]]></article-title>
<source><![CDATA[International Journal of Environmental Health Research]]></source>
<year>2018</year>
<volume>29</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>31-44</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Cheng]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Jia]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Poor ventilation worsens short&#8208;range airborne transmission of respiratory infection.]]></article-title>
<source><![CDATA[Indoor air]]></source>
<year>2021</year>
<volume>32</volume>
<numero>1</numero>
<issue>1</issue>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mundackal]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ngole-Jeme]]></surname>
<given-names><![CDATA[V. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of indoor and outdoor air quality in university academic buildings and associated health risk.]]></article-title>
<source><![CDATA[International Journal of Environmental Health Research]]></source>
<year>2020</year>
<volume>32</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1076-94</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oba]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Taniguchi]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Sato]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Takamatsu]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Morikawa]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Nakagawa]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Takaishi]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Saya]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Matsuo]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Nishihara]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[RT-PCR screening tests for SARS-CoV-2 with saliva samples in asymptomatic people: Strategy to maintain social and economic activities while reducing the risk of spreading the virus.]]></article-title>
<source><![CDATA[The Keio Journal of Medicine]]></source>
<year>2021</year>
<volume>70</volume>
<page-range>35-43</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peng]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Jimenez]]></surname>
<given-names><![CDATA[J. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Exhaled CO2 as a COVID-19 infection risk proxy for different indoor environments and activities.]]></article-title>
<source><![CDATA[Environmental Science &amp; Technology Letters]]></source>
<year>2021</year>
<volume>8</volume>
<page-range>392-7</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Port]]></surname>
<given-names><![CDATA[J. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Yinda]]></surname>
<given-names><![CDATA[C. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Avanzato]]></surname>
<given-names><![CDATA[V. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Schulz]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Holbrook]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Doremalen van]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Shaia]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Fischer]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Munster]]></surname>
<given-names><![CDATA[V. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Increased small particle aerosol transmission of B.1.1.7 compared with SARS-CoV-2 lineage A in vivo.]]></article-title>
<source><![CDATA[Nature Microbiology]]></source>
<year>2022</year>
<volume>7</volume>
<page-range>213-23</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ranga]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[SARS-CoV-2 aerosol and droplets: an overview.]]></article-title>
<source><![CDATA[Virusdisease]]></source>
<year>2021</year>
<volume>32</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>1-8.</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Satish]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendell]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Shekhar]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Hotchi]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Sullivan]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Streufert]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Fisk]]></surname>
<given-names><![CDATA[W. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Is CO2 an indoor pollutant? Direct effects of low-to-moderate CO2 concentrations on human decision-making performance.]]></article-title>
<source><![CDATA[Environmental health perspectives]]></source>
<year>2012</year>
<volume>120</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1671-7</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="">
<collab>World Health Organization. [World Health Organization website].</collab>
<source><![CDATA[Archived: WHO Timeline - COVID-19 2022.]]></source>
<year>2022</year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
