Introduction:

Measles was a common disease that, with high vaccination coverage, has caused outbreaks in different regions due to geographic mobility.

Objective:

To determine the epidemiological and clinical prevalence of the measles outbreak from January to June 2020 in Mexico City/IMSS North Delegation.

Materials and methods:

Retrospective, descriptive study in 124 reported cases of measles in the OOAD Norte D.F. IMSS; January-June 2020, under informed consent, obtaining sociodemographic data, week of notification, clinical manifestations, immunization history, suspected case or confirmed by confirmatory serum test and pharyngeal exudate. Using descriptive statistics with a confidence interval of 95%.

Results:

Prevalence of measles was 0.00006063%, the median age was 7 years (IQR = 26 years). The most affected age group was 1-4 years (27.4%). 52.4% of the sample were men. 62.9 % were residents of the Gustavo A. Madero Mayor’s Delegation The week with the most cases was 13 (March 22 to 28) with 19.4% History of immunization 36.3% and 63.7% without immunization Diagnosis in 19.4% of the cases were confirmed by laboratory and 80.6% remained suspicious for presenting clinical manifestations of measles.

Conclusions:

The epidemiological and clinical prevalence of the measles outbreak from January to June 2020 in Mexico City/Delegación Norte IMSS was determined, being 0.00006063 (a rate of 6,063 cases per 100 thousand inhabitants), being mainly diagnosed by clinical characteristics.

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