Sero survey begins to map exposure to virus

NEW DELHI: A serological survey began in some parts of Delhi on Saturday to determine the extent of the coronavirus disease (Covid-19)’s spread, even as chief minister Arvind Kejriwal said his government was deploying “five weapons” – testing and isolation, providing oximeters and oxygen concentrators, plasma therapy, screening, and survey – in the fight against the infection.

Blood samples will be taken from randomly selected people as part of the survey to study the scale of undetected infections. HTC