Research Article

Mortality Associated with Influenza in Tropics, State of São Paulo, Brazil, from 2002 to 2011: The Pre-Pandemic, Pandemic, and Post-Pandemic Periods

Table 2

Influenza virus identified by year, positivity of specimens by season State of São Paulo, 2002–2011.

YearVirus probably predominantPositive specimens, average in season6Total number of specimens

20021B (58%), AH3N2 e AH1N1 (20% each)9.9%892
20031AH3N2 (60,6%), H1N1 (27%)11.8%1365
20042AH3N2 (67%), influenza B (20%)9.0%2159
20051H3N2 (65,6%), B (24%) e H1N1 (11,4%)4.9%1612
20063AH3N210.4%2135
20073AH3N28.5%4840
20084AH1N1 e B6.6%6303
20094AH1N1 e AH1N1 pdm 20097.8%1703*
20105AH1N1 pdm2009 = 1st mid, AH3N2 = 2nd mid4.8%2205*
20115AH3N2 e AH1N1 pdm20093.5%2795

FluNet (WHO, data referring to South America) [22].
2Guia de vigilância epidemiológica. Ministério da Saúde, Secretaria de Vigilância em Saúde. 6. ed. Brasília 2005 [28].
3Boletim da Saúde, 2009 (State Board of Health, Rio Grande do Sul) [29].
4Boletim Epidemiológico, 2011 (State Board of Health, Rio Grande do Sul) [30].
5Site: http://ais.paho.org/phip/viz/ed_flu.asp [19].
6SIVEP_GRIPE-(Brazilian Ministry of Health) [31].
*During the pandemic there was a commitment in the collection of samples for surveillance of flu-like syndromes.