Published: Apr 14, 2021, 05:23 IST | Updated: Apr 14, 2021, 05:23 IST
As mutant strains of the Wuhan Virus drive a resurgence of cases, questions are being raised on the accuracy of RT-PCR tests. Patients with negative results are complaining of symptoms. WION's Palki Sharma tells you whether variants are returning false negatives.