Temporal Trends of Influenza A (H1N1) Virus Seroprevalence following 2009 Pandemic Wave in Guangdong, China: Three Cross-Sectional Serology Surveys

The Infection Attack Rate and Severity of 2009 Pandemic H1N1 Influenza in Hong Kong

(2010) Joseph T. Wu et al.   CLINICAL INFECTIOUS DISEASES

Comparison of hemagglutination inhibition assay, an ELISA-based micro-neutralization assay and colorimetric microneutralization assay to detect antibody responses to vaccination against influenza A H1N1 2009 virus

(2010) S. Grund et al.   JOURNAL OF VIROLOGICAL METHODS

Incidence of 2009 pandemic influenza A H1N1 infection in England: a cross-sectional serological study

(2010) Elizabeth Miller et al.   LANCET

Determination of serum antibodies against swine-origin influenza A virus H1N1/09 by immunofluorescence, haemagglutination inhibition, and by neutralization tests: how is the prevalence rate of protecting antibodies in humans?

(2010) Regina Allwinn et al.   MEDICAL MICROBIOLOGY AND IMMUNOLOGY

How to maintain surveillance for novel influenza A H1N1 when there are too many cases to count

(2009) Marc Lipsitch et al.   LANCET

Safety and immunogenicity of 2009 pandemic influenza A H1N1 vaccines in China: a multicentre, double-blind, randomised, placebo-controlled trial

(2009) Xiao-Feng Liang et al.   LANCET

Emergence of a Novel Swine-Origin Influenza A (H1N1) Virus in Humans

(2009)   NEW ENGLAND JOURNAL OF MEDICINE

Cross-Reactive Antibody Responses to the 2009 Pandemic H1N1 Influenza Virus

(2009) Kathy Hancock et al.   NEW ENGLAND JOURNAL OF MEDICINE

After Delays, WHO Agrees: The 2009 Pandemic Has Begun

(2009) J. Cohen et al.   SCIENCE