COVID-19 cases in India increased by 1,329 in the last 24 hours to reach 18,985. 603 people have died since the coronavirus outbreak with 44 deaths being reported since yesterday. Meanwhile, the Indian Council of Medical Research (ICMR) advised all states on April 21 not to use new rapid antibody test kits for Covid-19 for the next two days and said that it will investigate the issue of faulty kits.