The 2009 swine flu pandemic in India was the outbreak of swine flu in various parts of India. Soon after the outbreak of H1N1 virus in the United States and Mexico in March, the Government of India started screening people coming from the affected countries at airports for swine flu symptoms.^[1] The first case of the flu in India was found on the Hyderabad airport on 13 May, when a man traveling from US to India was found H1N1 positive.^[2] Subsequently, more confirmed cases were reported and as the rate of transmission of the flu increased in the beginning of August, with the first death due to swine flu in India in Pune,^[3] panic began to spread. As of 24 May 2010, 10193 cases of swine flu have been confirmed with 1035 deaths.

The only known drug to work against H1N1 (Tamiflu) was not sold in general medical stores, to prevent the virus from developing antibiotic resistance due to excessive use. The government feared that people would pop in pills for no reason, thereby making the virus resistant to its only known cure. The problem facing the state machinery was that flu infected cases were coming from across the country.

Generic version of Tamiflu (Oseltamivir) was made available in Indian market, after several months of swine flu attack. Natco Pharma and Strides Arcolabs have launched their generic version of Oseltamivir, Natflu and Starflu. These drugs were made available to the customers directly under prescription.^[4][5][6][7]

On 8 August 2010 the Indian government reported there had been 1833 deaths from swine flu in the country.^[8]

On 18 October 2010 a biotechnology firm announced the launch of India's first indigenously developed cell culture H1N1 Swine Flu Vaccine under the brand name HNVAC.^[9]

A new strain of influenza virus, officially named the "new H1N1", first identified in April 2009, and commonly called "Swine flu" initially spread in Mexico and then globally by transmission. It is thought to be a mutation of four known strains of the influenza A virus, subtype H1N1: one endemic in (normally infecting) humans, one endemic in birds, and two endemic in pigs (swine). Experts assume the virus "most likely" emerged from pigs in Asia, and was carried to North America by infected persons.^[10] The virus typically spreads from coughs and sneezes or by touching contaminated surfaces and then touching the nose or mouth. Symptoms, which can last up to a week, are similar to those of seasonal flu, and may include fever, sneezes, sore throat, coughs, headache, and muscle or joint pains.^{[citation needed]}

The first death was a 14-year-old girl in Pune, Maharashtra. On 8 and 9 August a 43-year-old man in Ahmedabad, Gujarat, a 42-year-old teacher in Pune and a 53-year-old woman in Mumbai died. On 10 August a 53-year-old doctor in Pune and a 4-year-old in Chennai died.^[11] On 11 August a 7-year-old girl in Vadodara, Gujarat died. On 13 August, a 26-year-old woman became Bangalore's first victim of swine flu. An eleven-month-old boy, a 75-year-old woman and a 37-year-old woman died taking the toll in Pune, severely hit by the virus, to 15 and across the country, to 24.A lady having a young daughter of 5 yrs died near Mumbai in Khopoli on 14 August. On 13 August, three people died at different hospitals in Bangalore, according to the reports.^[12]

Swine flu death toll crosses 500 in India. New Delhi, 10 November—The death toll of the H1N1 flu in India is rising in leaps and bounds with 18 new fatalities reported Monday. Within the short space of a little over three months, the mortality figure has shot up to 503.^[13]