In 2007, 86 human cases with 59 mortalities were reported from nine countries: Cambodia, China, Egypt, Indonesia, Laos, Myanmar, Nigeria, Pakistan and Vietnam [1]. A total of 442 confi rmed cases of avian fl u (H5N1) have been reported till 24 September 2009 from the above-mentioned 15 countries with 262 deaths [2].The mortality rate is around 60% which is very high. Infection with H5N1 in humans has so far remained confi ned to individuals with close contact with infected birds or surfaces or objects heavily contaminated with their droppings. This virus has not acquired the ability for sustained human to human spread and therefore has not been able to infect a large number of individuals and cause a pandemic.