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Commentary

Hemophilus influenzae type b (Hib) vaccine: An effective control strategy in India

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Pages 1158-1160 | Received 02 Aug 2011, Accepted 09 Aug 2011, Published online: 01 Nov 2011
 

Abstract

Hemophilus influenzae type b (Hib) is an encapsulated, non-motile and non-spore-forming Gram-negative coccobacillus which causes severe pneumonia, meningitis and other life threatening illnesses. Hib disease affects almost exclusively (95%) children aged less than 5 y throughout the world. The mean age of onset is 6–24 mo after which it declines gradually until age 5 y. The World Health Organization (WHO) estimates that Hib is responsible for 3 million cases of serious illnesses and approximately 386,000 deaths worldwide each year in children aged under 5 y. In the latest position paper on Hib vaccine, WHO recommended the inclusion of Hib conjugate vaccines in all routine infant immunization programs without waiting for local disease-burden data. The WHO and the Global Alliance for Vaccine Immunization (GAVI) have been working to expand supplies of Hib vaccine, reduce vaccine cost, and assist especially low-income countries with vaccine introduction. Hib vaccine is safe, highly effective and readily available in the market. Hib vaccine has been shown to be > 95% efficacious in diverse populations around the world. Globally, hundreds of millions of doses of Hib vaccine have been administered in the last 2 decades. More than 160 countries are using Hib vaccine in national immunization programmes and around 25 countries planning to introduce. Hib vaccination fits into the India’s national immunization schedule.

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