Covid-19: How a ‘warm vaccine’ could help India tackle coronavirus

Soutik Biswas
India correspondent

Publishedduration8 hours agoRelated TopicsCoronavirus pandemicimage copyrightGetty Images

In India’s boiling summers, temperatures can easily rise to 50C (122F).

Nearly all vaccines need to be transported and distributed between 2C and 8C in what comprises the so-called cold chain. And most of the Covid-19 vaccines under development, according to the World Health Organisation (WHO), will need to be refrigerated at temperatures well below 0C, the freezing point of water.

Imagine a Covid-19 vaccine that is heat tolerant and can be transported to remote towns and villages for tens of millions of jabs without depending on the cold chain.

A group of Indian scientists are working on such a vaccine. The “warm” or a heat-stable vaccine, they

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