Merck & Co. said Monday it was halting the development of its two experimental Covid-19 vaccines after data from early clinical trials showed the shots generated frustrating immune responses against the virus.
Early studies of the vaccines showed they produced poorer immune responses in subjects when the pictures were taken than people who survived Covid-19 or took authorized vaccines against Covid-19, the company said.
The outcome removes a major vaccine player from the galaxy of companies looking for photos to curb the spread of the virus, as few companies that have managed to bring photos to market are struggling to meet high demand.
Kenilworth, a New Jersey-based Merck, one of the world’s leading vaccine manufacturers, said it would now focus on advancing two experimental drugs, Covid-1
Merck said it expects test results for the pair of drugs in the coming weeks and the company may ask regulators to allow use if the results are positive.