Research teams in the UK and the US have also been investigating nasal spray vaccines. In November, India's drug regulator approved the use of iNCOVACC as a heterologous booster dose - a booster ...

"One or two days of relief is not worth the potential harm to heart health," Dr Mittal, suggesting safer alternatives, ...

However, sources said the company had received approvals from ethics committees and is registered with Clinical Trial Registry-India (CTRI) for clinical trials of the nasal spray which is designed ...