Demographic Shift of Influenza A(H1N1)pdm09 during and after Pandemic, Rural India

Abstract

Population-based active surveillance in India showed higher incidence rates for influenza A(H1N1)pdm09 among children during pandemic versus postpandemic periods (345 vs. 199/1,000 person-years), whereas adults had higher rates during postpandemic versus pandemic periods (131 vs. 69/1,000 person-years). Demographic shifts as pandemics evolve should be considered in public health response planning.

Keywords

• influenza
• seasonal influenza
• influenza A(H1N1)pdm09
• India
• pandemic
• viruses