Insufficient testing at the border and the impossibility of controlling people's movements mean that the Games could exacerbate the spread of the infectious Delta variant of the virus, a prominent public health expert said.
The head of a Japanese doctors' union warned on Tuesday that holding the Olympic Games in Tokyo this summer, with tens of thousands of people from around the world, could lead to the emergence of an "Olympic" strain of the coronavirus.
Some critics contend that Japan's rush to secure supplies is driven largely by a political desire to show the world it is fully committed to hosting the Games.
'Both India and Japan can find themselves in a win-win situation if they draw some lessons from each other's strengths,' says Dr Rajaram Panda.