Asymptomatic Patients Have Higher SARS-CoV-2 Viral Loads: St
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A new study shows that asymptomatic COVID-19 patients have greater viral loads than those with symptoms. Researchers evaluated the viral loads of six different sample types of patients of different ages and clinics to determine the relationship between disease course and SARS-CoV-2 viral load.

The researchers collected nasopharyngeal, oropharyngeal, oral cavity, rectal, saliva, urine, and blood samples from patients who were hospitalized due to COVID-19. A total of 360 samples from 60 patients were obtained upon admission. Of these, 25 percent did not have symptoms, while 75 percent were symptomatic.

The viral load had a negative trend with increasing age, while a significant decrease was seen with increasing disease severity. The team noted that factors tied to a poor prognosis, including bilateral ground-glass opacity in chest X-ray, low lymphocyte count, and older age, are correlated with low SARS-CoV-2 viral load.

Asymptomatic patients are known to spread the virus without them knowing they are infected. This makes it harder for countries to control the spread of the virus. Some countries have reported second wave of infection. With the winter fast approaching health experts advise people to avoid crowds, maintain a distance from others, wear masks, and practice regular hand hygiene.

Source:
https://link.springer.com/article/10.1007/s15010-020-01548-8
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