Ten-month immunity after Covid-19 infection seems strong against all variants of the coronavirus, the study found. 研究发现,感染新冠病毒10个月后,对所有冠状病毒变体的免疫力似乎都很强。 “There’s quite a long sustained...
Motivated by historical and present clinical observations, we discuss the possible unfavorable evolution of the immunity (similar to documented antibody-dependent enhancement scenarios) after a first infection with COVID-19. More precisely we ask the question of how the epidemic outcomes are affected ...
Detection of IgG and NAbs is not synonymous with durable immunity. With regard to COVID-19, a small, nonpeer-reviewed, preprint report provides the only data thus far on possible postinfection immunity in primates.6In this study, 4 rhesus macaques were infected with SARS-CoV-2, and followin...
COVID-19 Can Cause Severe Inflammation in the Brain Both during and after infection with the Coronavirus SARS-CoV-2, patients may suffer from severe neurological symptoms, including anosmia, the loss of taste and smell typically associated with COVID-19. Along with direct damage caused by the v...
"Two months is too little time to know if it causes reinfection and how it affects long-term immunity. We saw some studies where the blood of patients who recovered from the new variant helped with Delta infection but we don't know if that will be true for future variants," she said....
Although health officials know that the body produces antibodies as a result of COVID-19 infection, they don't know how long the immunity those antibodies may produce will last. Will it last for a season like the common cold? This would mean that patients could contract the coronavirus multip...
memory B cells had kept evolving during this time," Nussenzweig says. "That often happens in chronic infections, like HIV or herpes, where the virus lingers in the body. But we weren't expecting to see it with SARS-CoV-2, which is thought to leave the body after infection has resolved...
Australian Nobel laureate immunologist Peter Doherty. (Photo courtesy of the Peter Doherty Institute for Infection and Immunity) It is highly improbable that people who have recovered from COVID-19 will be infected again, and even if it turns out to be the case, the secondary infection would be...
Recent studies focus renewed attention on the ongoing debate about the importance of infection-acquired immunity and the extent to which it should be taken into account in public health policy.
On the other hand, vaccination after SARS-CoV-2 infection increased T-cell immunity, antibody-secreting memory B-cell response to the spike protein, and neutralising antibodies effectivity even after the first dose of mRNA-based vaccines (Pfizer-BioNTech or Moderna)59,60,61. While our data showe...