India, April 21 -- Indian officials are in touch with their counterparts in the US to resolve a hold-up in supplies of raw materials needed by Covid-19 vaccine makers that has been caused by Washington's decision to prioritise local buyers under a war-time law invoked earlier this year by President Joe Biden to boost vaccine production.

Supplies of nearly 30 such items have been affected by this wartime law, known as the Defense Priorities and Allocations System Programme (DPAS) under the Defense Production Act (DPA).

Vaccine maker Serum Institute of India (SII) is understood to be in dire need of raw materials as it ramps up its production of Covid-19 vaccines amid an alarming surge in infections across the country.

These raw material...