Jodhpur recorded the highest death toll with 16 fatalities and 225 people testing positive. (FILE)
At least 40 people have died and more than 1,000 have tested positive for swine flu since the beginning of this year in Rajasthan, authorities said on Friday.
Last year around 1,100 people died and 15,000 were infected across India by the highly contagious A H1N1 virus that spreads from human-to-human.
Cases spike in the winter months of December and January in the west and north of the country, including in Rajasthan and in New Delhi.
Authorities in Rajasthan, famous for its deserts and palaces, have told doctors they must seek permission before going on leave and plan a door-to-door campaign to detect infected patients.
Health officials have also launched an awareness campaign to sensitise people about symptoms, precautions and treatment, and have screened more than 5,100 people.
"Total deaths are 40 and positive cases are 1,036 as from January 1 to 17 in Rajasthan. One of the deaths occurred on Thursday," according to a statement by the Rajasthan health department.
Rajasthan's Jodhpur district recorded the highest death toll with 16 fatalities and 225 people testing positive.
BJP President Amit Shah was a high-profile victim of swine flu in Delhi this week, who was admitted to AIIMS with the virus.
No travel advisory has been issued however.