Amid worries over four monkeypox cases in India, vaccine-maker Adar Poonawalla said today that the Serum Institute of India is spending its own funds to import a few million doses of a Danish smallpox vaccine which can be used to treat cases if there is a larger breakout of the infection in India. The initial consignment of the small pox vaccine, manufactured by the Danish company Bavarian Nordic, could be here in a few months once a contract is signed.