RT Journal A1 Larson HJ, Heymann DL T1 PUblic health response to influenza a(h1n1) as an opportunity to build public trust JF JAMA JO JAMA YR 2010 FD January 20 VO 303 IS 3 SP 271 OP 272 DO 10.1001/jama.2009.2023 UL http://dx.doi.org/10.1001/jama.2009.2023 AB In June 2009, the World Health Organization (WHO) declared the 2009 influenza A(H1N1) pandemic and in October 2009, President Obama declared it a national emergency.1 The influenza A(H1N1) virus is being monitored around the world for changes in virulence or epidemiology. There has been a push to have vaccines ready, yet vaccine supply may be insufficient in some areas. The public wants to be assured that there is enough vaccine, but at the same time, some are questioning the safety and effectiveness of the vaccine. It is a time of uncertainty both for the public health community and for the public.