Severe Respiratory Disease in Mexico: Past vs. Present

During the spring 2009 outbreak of H1N1 influenza in Mexico, most deaths and cases of severe pneumonia occurred in younger individuals.

In Mexico, a dramatic increase in the number of individuals (mostly young persons) hospitalized for pneumonia during the spring of 2009 prompted immediate evaluation. Ultimately, a novel swine-origin influenza A (HIN1) virus (S-OIV) was identified and was found to be the underlying pathogen in most cases. Now, using data from the National Epidemiological Surveillance System and the Mexican Ministry of Health, researchers have compared age patterns of morbidity and mortality between cases of severe pneumonia reported from March 24 through April 29, 2009, (n=2155) and those reported from epidemics during the preceding 4 years.

The age distributions for morbidity and mortality during the 2009 outbreak were markedly different from those observed…

Reviewing Author

Larry M. Baddour, MD

Disclosures

RoyaltiesUpToDate, Inc. (Authorship duties)

Larry M. Baddour, MD

Disclosures

RoyaltiesUpToDate, Inc. (Authorship duties)

Severe Respiratory Disease in Mexico: Past vs. Present

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Reviewing Author