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Ursprungligen postat av
LuluBrooksie
Varifrån kommer denna villfarelse att man skulle bli immun mot viruset?
Kineserna visste redan i januari att ingen immunitet fanns, folk som haft det en gång återinsjuknade...
Tror ni att detta virus är som vilken vanlig bakterie som helst? NEJ!
Det finns t ex ingen immunitet mot de vardagliga förkylningarna heller
(också sk "corona"). För de är olika virus. Och COVID-19 muterar hela tiden.
Tycker mig läst att de flesta experter menar att det är sannolikt att man blir immun.
https://fortune.com/2020/03/06/coronavirus-recover-test-positive-twice/
"Being reinfected with COVID-19 is possible, said Sharon Lewin, director of the Peter Doherty Institute for Infection and Immunity in Melbourne, but such an instance would be "surprising." It's possible that patients are not actually being reinfected, but that other factors—misdiagnosis, human error, or faulty tests—are giving that appearance. "
https://www.latimes.com/world-nation/story/2020-03-13/china-japan-korea-coronavirus-reinfection-test-positive
The dynamic is also playing out in other countries: Two such cases have emerged in Japan and South Korea, though the Korean patient has been released from hospital after retesting negative five times.
Scientists in and outside China agree that reinfection is a highly unlikely explanation for the patients who retest positive. They say testing errors are more likely to blame — either false negatives that resulted in patients being discharged too early, or false positives when they retested and were taken back into hospital.
Those errors could be attributed to contaminated test samples, human error while taking swabs, or an oversensitive nucleic acid test that detects strands of virus. When a person gets sick with any kind of viral infection, their immune system naturally develops antibodies that should protect them from contracting the illness again after they’ve recovered.
Even in cases where that immunity wears off, it shouldn’t be as quick as within a few days or weeks, said Dr. Keiji Fukuda, director of Hong Kong University’s School of Public Health.
“If you get an infection, your immune system is revved up against that virus,” he said. “To get reinfected again when you’re in that situation would be quite unusual unless your immune system was not functioning right.”
