Wednesday, 19 December 2012

China has low rates of adverse reactions to immunisation.

Adverse reactions to immunisations are uncommon and generally non-serious, new figures from Zhejiang show.
Passive surveillance data for adverse events following immunisation (AEFI) reported to the National AEFI Surveillance System in Zhejiang province show that the overall rate was 9.2 per 100,000 doses for 2008-2011. There were two spikes in adverse reactions, one associated with the introduction of pandemic H1N1 influenza vaccine (pH1N1) in 2009 and the other for a Measles-Mumps vaccine (MM) campaign in 2010. The majority of adverse reactions reported were non-serious events. There were15 deaths were recorded but only one was possibly related to immunisation. The most frequently reported reactions were fever and injection site reaction.
Source: Clinical Vaccine Immunology

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