New Delhi, Dec. 15 -- India's food safety regulator has launched a surveillance and enforcement drive to test the quality of eggs following a social‑media uproar over a viral video claiming that samples of a premium egg brand contained traces of a banned, potentially cancer‑linked substance.

Food Safety and Standards Authority of India (FSSAI) has tasked food safety officers with collecting samples of both branded and unbranded eggs for testing at 10 laboratories across the country, according to three officials familiar with the development.

The regulator is specifically testing for traces of nitrofuran metabolites-a potentially harmful class of antibiotics at the centre of the controversy-to ensure that residues remain stri...