Differences in Influenza Seasonality by Latitude, Northern India

Authors :: Renu B. Lal
Shobha Broor
Catherine B. Smith
Siddhartha Saha
Parvaiz A Koul
Michael W. Shaw
John R. Barnes
Mandeep S. Chadha
Source :: Emerging Infectious Diseases, Vol 20, Iss 10, Pp 1723-1726 (2014), Emerging Infectious Diseases
Publication Year :: 2014
Publisher :: Centers for Disease Control and Prevention, 2014.
Abstract: The seasonality of influenza in the tropics complicates vaccination timing. We investigated influenza seasonality in northern India and found influenza positivity peaked in Srinagar (34.09°N) in January-March but peaked in New Delhi (28.66°N) in July-September. Srinagar should consider influenza vaccination in October-November, but New Delhi should vaccinate in May-June.

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