A new study from Héma-Québec, in Canada, found that 15 recovered COVID-19 patients who donated plasma had antibody levels drop after three months and again 21 days later.
Coronavirus survivors’ plasma may be useless for treating people with COVID-19 if it isn’t donated soon enough because antibodies fade just three months after symptoms start, study finds
- Researchers from Canada followed 15 recovered coronavirus patients who donated convalescent plasma
- Convalescent plasma therapy is when the liquid portion of blood is taken from a recovered COVID-19 patients
- It is transferred into sick patients in hopes they will develop the antibodies needed to fight off the infection
- All of the donors showed decreases in antibodies after three months, and levels for half the detectable antibodies fell again 21 days later
- This means the earlier that recovered COVID-19 patients donate plasma to those who are ill, the better
Coronavirus antibodies in blood plasma donations fade rapidly after symptoms first appear, a new study suggests.
Researchers followed a small group of recovered COVID-19 patients who donated their blood and found all of them showed decreases in antibodies after three months.
What’s more, just three weeks later, levels for half of the detectable antibodies fell again.
The team, from Héma-Québec, a blood donation center in Québec, Canada, says the findings suggest the earlier plasma is collected after someone recovers from COVID-19, the better.
Additionally, they add that studies using antibodies tests to determine how many people have recovered from the virus may be undercounting the true figure.
Study author Dr Renée Bazin of Héma-Québec says this research is among the first show that recovered COVID-19 patients can go from seropositive to seronegative.
This means patients test positive for antibodies against the coronavirus and, after a certain point, have no detectable antibodies.
‘While many clinical trials are underway to better understand whether convalescent plasma is clinically beneficial for treating COVID-19, a key question is at what time point is it most effective to collect donor plasma based on the presence of antibodies that help fight the virus,’ she said.
‘Based on our findings, antibodies against the new coronavirus are not eternal.’
For the study, published in the journal Blood, the the team looked at data from 15 plasma donors in Quebec.
All of the adults were diagnosed with COVID-19, and subsequently recovered from the infection.
More @ Source: Coronavirus antibodies from blood plasma donations start to fade three months after symptoms start | Daily Mail Online
This might mean vaccines wont work after 3 months.
4 $hot$ a year
Just because a vaccine might not work, or isn’t safe, doesn’t mean they won’t try force you to take it.
