International peer-reviewed medical journal Vaccines has published a Russian study proving the efficacy of Russia-made Sputnik V vaccine against COVID-19 in the long-term,
Delhi Health Minister Satyendar Jain has said 97 per cent of people in the national capital have developed antibodies against Covid-19. According to Jain, the sixth serological survey found that all the 11 districts have a seroprevalence of more than 93 per cent. Four districts south, central, north