<p>Serum Institute of India and Bharat Biotech are expected to pursue late stage clinical trials of intranasal Covid-19 vaccines in the coming months once they receive regulatory approval, India's health minister said on Sunday.</p>.<p>Dr Harsh Vardhan said the late stage trial generally involves thousands of participants, sometimes 30,000 to 40,000.</p>.<p>Of the vaccines currently in Phase 3 trials, all are administered by injection, according to the World Health Organization (WHO).</p>.<p>On Saturday, India's Dr Reddy's Laboratories Ltd and the Russian Direct Investment Fund (RDIF) said they have received renewed approval to conduct late-stage clinical trials in India of the Russian Covid-19 vaccine.</p>.<p>India's coronavirus infections rose by another 61,871 over the past 24 hours, data released on Sunday showed, although the health ministry said it is seeing a trend of steadily declining active cases.</p>.<p>The Indian Council of Medical Research (ICMR) said it will revisit its protocol for Covid-19 treatment after the WHO found some of the commonly used drugs, including remdesivir, had little or no impact on a patient's chances of surviving, local media reported earlier on Sunday.</p>
<p>Serum Institute of India and Bharat Biotech are expected to pursue late stage clinical trials of intranasal Covid-19 vaccines in the coming months once they receive regulatory approval, India's health minister said on Sunday.</p>.<p>Dr Harsh Vardhan said the late stage trial generally involves thousands of participants, sometimes 30,000 to 40,000.</p>.<p>Of the vaccines currently in Phase 3 trials, all are administered by injection, according to the World Health Organization (WHO).</p>.<p>On Saturday, India's Dr Reddy's Laboratories Ltd and the Russian Direct Investment Fund (RDIF) said they have received renewed approval to conduct late-stage clinical trials in India of the Russian Covid-19 vaccine.</p>.<p>India's coronavirus infections rose by another 61,871 over the past 24 hours, data released on Sunday showed, although the health ministry said it is seeing a trend of steadily declining active cases.</p>.<p>The Indian Council of Medical Research (ICMR) said it will revisit its protocol for Covid-19 treatment after the WHO found some of the commonly used drugs, including remdesivir, had little or no impact on a patient's chances of surviving, local media reported earlier on Sunday.</p>