Centre vs States over Covid-19 vaccine: What exactly is going on?

Amid the second wave of Covid-19 pandemic across India with a continuous increase in demand for vaccines, Delhi Chief Minister Arvind Kejriwal has requested the Centre to allow more pharmaceutical firms to manufacture vaccines for India.

In a letter to Prime Minister Narendra Modi, Kejriwal on Tuesday urged the Centre to share Covid vaccine formulas and allow more companies to manufacture vaccine doses.

At present, India has two vaccines and only two companies making them -- Covishield (by the Serum Institute) and Covaxin (by Bharat Biotech) and both have struggled to raise output. A third vaccine -- Russia's Sputnik V -- has been cleared but not yet rolled out.