Serum Institute of India (SII) CEO Adar Poonawalla on Tuesday expressed concern over reports of a rising Covid-19 graph in China but said there is no need to panic as the vaccination coverage in India is excellent.

Poonawalla's tweet came a day after the Union Health Ministry urged all states and UTs to ramp up the whole genome sequencing of positive samples to keep track of newer variants, if any, amid a spurt in cases in the US and China.