Effectiveness of an Indian-made Attenuated influenza A(H1N1Jpdm 2009 vaccine A case control study

摘要

In the spring of 2009, a new type of H1N1 influenza A virus infection was detected in Mexico. Due to its quick spread, it caused a major concern worldwide. This led the World health Organization (WHO) to declare a pandemic of its highest level 6 on 11 June 2009. This action indicated widespread transmission in the community.The first case in India was reported in Hyderabad on 16 May 2009,4 and the first death was of a 14-y-old girl in Pune, on 3 August 2009. Hyderabad is situated 557 km southeast to Pune. These events and the quick spread in the community caused panic in public.5 From May 2009 until the week ending on 2 January 2011, India reported 46142 laboratory confirmed influenza A(HlNljpdm 2009 cases and 2728 deaths.6'7 Maharashtra state alone reported 9972 proven cases of influenza A(HlNlJpdm 2009 and 937 deaths. These were the largest numbers in any state of India.6 The city of Pune in Maharashtra reported the highest numbers of cases and deaths among all cities of India.