"There is no point in testing a person just after they have been exposed because it takes time for the virus to start multiplying in the respiratory tract [the incubation period is three to 14 days]," said NHLS spokesperson Mzimasi Gcukumana.
"There are several reasons why this can happen. The PCR [polymerase chain reaction] test detects viral RNA [ribonucleic acid] in a respiratory sample. Usually the virus is detectable for only a short time during the infection. "It is very important to collect the sample at the right time, which is part of the screening process before samples are taken for testing. Other reasons for a negative test could be that the sample was not properly taken or there is a very long delay between sample collection and testing."
Mr President, I love my mother. I do not want to lose her to something I cannot see or do not understand"I was retested on June 16, the day I was admitted with suspected pneumonia to Westville Hospital. The false negative had worried me because after I tested I got sicker and sicker, with my fever peaking at 39.1."
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