2009, Number 87
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Rev Enfer Infec Pediatr 2009; 22.23 (87)
Epidemiologic behavior of varicella in Mexico: 18 years of studies and estimations for the next five years
Cabrera GDA, Muñoz MW, Gómez ACM
Language: Spanish
References: 19
Page: 77-82
PDF size: 341.68 Kb.
ABSTRACT
Introduction: Varicella is a worldwide disease from seasonal trend; dominance in the winter and spring. According to the regulations in force in our country, varicella is reporting weekly.
Objective: The aim of this study was to determine the trend of varicella in Mexico from 1990 to 2007, from the Unified Information System for Epidemiological Surveillance (SUIVE) and make projections through 2012. Morbidity rates were calculated from the projected population of the National Population Council (CONAPO).
Material and methods: We conducted a regression analysis and Pearson correlation as statistical analysis. The incidence rate has increased since 1990 from 178 cases per 100,000 inhabitants to 264 in 2006, being the highest recorded in 2000 with 377 cases per 100,000 inhabitants (0.495, p=0.18, R=0.245, p=0.37). The reported cases have presented variations each year, but with upward trend (0.715, p=0.0004, R=0.511, p=0.001). The behavior of varicella tends to be cyclical, with increases in incidence reflected during 1995, 2000 and 2004. For the whole estimated period, the explanation was for 82.8% of the cases (0.828, p=0.0005) and 63.6% for the incidence rate (0.636, p=0.0005).
Conclusion: The behavior of varicella in our country is cyclical, every four or five years would be an increase in incidence, so we need to continue and improve epidemiological surveillance in our country.
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