covid, reinfection 

Two papers testing reinfection with SARS-CoV-2 in rhesus macacques. They both show minimal viral load after reinfection.
This suggests that reinfection may not be a concern.

Obligatory "this is not in humans" and "I am not a virologist" and "these are small sample sizes". But these are optimistic preliminary results, for sure


covid, reinfection 

From the first paper, you can see changes to body weight and temperature after each infection.

All subjects showed increased viral load after initial infection. The group that was re-infected did not show an increased viral load after re-infection.

The group that was re-infected did show a change in immune cell counts after re-infection whereas the monkeys that weren't re-infected showed no changes in the same time

covid, reinfection 

Viral load after initial infection was found in various tissues. However, in the re-infected group, viral load was not detected in any of the same tissues.

This suggests the infection and re-infection were both done properly and that the virus was cleared and no longer present, even after re-infection

covid, reinfection 

The second paper performed a similar experiment. They had 3 groups with different levels of initial viral exposure (group 1 = high infection concentration, group 2 = medium, group 3 = low). Viral load was detected after infection for each group

covid, reinfection 

All 3 groups showed a reduced viral load after re-infection. It was still present in the high and medium exposure groups 1 day after re-infection, but not detectable in the low-exposure group.

Viral load was not detected after 6 days in all 3 exposure groups. These levels were all much higher in the initial infection

covid, reinfection 

Again, overall these are optimistic results. Let's hope these findings generalize to humans as well.

That would be good news for all of us

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