Antibody tests reveal how many people have contracted the disease, including people whose symptoms were too mild to report or people who are asymptomatic.
Vipimo vya antibodi vinaonyesha idadi ya watu waliopata ugonjwa ikiwa ni pamoja na wale ambao dalili zao zilikuwa za chini sana kuripotiwa au wale ambao hawakuonyesha dalili zozote.