Written by Amani Nilar
20 Aug, 2021 | 2:03 pm
COLOMBO (News 1st): Delta-infected individuals shed the viral RNA even before showing symptoms, Director of the Institute of Allergy and Immunology, Dr. Chandima Jeewandara says.
In a tweet, Dr. Jeewandara further stated that on average, people begin having symptoms 5.8 days after infection with Delta – 1.8 days after they first tested positive for viral RNA, which leaves two days for individuals to shed viral RNA before they show any sign of COVID-19.
The doctor also mentions that before Delta emerged, individuals infected with SARS-CoV-2 took an average of 6.3 days to develop symptoms and 5.5 days to test positive for viral RNA, leaving a narrower window of 0.8 days for oblivious viral shedding from the individual.
He emphasizes that as a result, 74% of infections with Delta took place during the presymptomatic phase (phase before showing any symptoms), which is a higher proportion than for previous variants.
Vaccines remain as a vital, effective and a significant part of our response against COVID-19, as vaccinated individuals are 65% less likely than unvaccinated individuals to infect someone else, he adds.
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