Citat:
Ursprungligen postat av
IMBILDEN
Det man har sett är att immunitet varar inte för evigt. Detta oavsett om man fått den genom vaccin eller genom infektion.
Det finns hittills inget som tyder på att naturlig immunitet avtar. Det är vaccinen som avtar snabbt.
”Our data suggest
waning of S-antibody levels in infection-naive individuals over a 3–10-week period after a second dose of either ChAdOx1 or BNT162b2.”
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(21)01642-1/fulltext
”
Having SARS-CoV-2 once confers much greater immunity than a vaccine—but no infection parties, please”
https://www.sciencemag.org/news/2021/08/having-sars-cov-2-once-confers-much-greater-immunity-vaccine-no-infection-parties
Citat:
Likaså finns det olika strängar av viruset. Var du sjuk i alfavarianten för 6-12 månader sedan är det inte alls säkert att du är skyddad nu om du skulle drabbas av delta.
Jo, t.o.m. wuhan-varianten ger skydd mot delta.
Ultrapotent antibodies against diverse and highly transmissible SARS-CoV-2 variants
”Wang et al. identified four antibodies from early-outbreak convalescent donors that are potent against 23 variants, including variants of concern”
”
including B.1.1.7, B.1.351, B.1.427, B.1.429, B.1.526, P.1, P.2, B.1.617.1, and B.1.617.2—indicated that these antibodies were highly potent against VOCs despite being isolated from subjects infected with early ancestral SARS-CoV-2 viruses.”
”The B cells isolated from donor-derived blood samples were sorted for antibody identification. This led to the identification of four potent neutralizing antibodies targeting the spike RBD. These antibodies showed a high affinity for the SARS-CoV-2 spike even at nanomolar concentrations.”
”The findings revealed that of 4 antibodies, two bound to RBDs in the “up position” and two bound to RBDs in the “down position.” Moreover, three out of four antibodies directly blocked the RBD – ACE2 interaction, and one indirectly inhibited the interaction through steric hindrance - the slowing of chemical reactions due to steric bulk.”
”By conducting multiple rounds of selection using combination treatments with two antibodies, it was observed that antibody combinations might reduce the risk of escape mutation acquisition and subsequent development of resistant viral variants.”
https://science.sciencemag.org/content/early/2021/06/30/science.abh1766
Du har inte ett rätt i vad du skriver.
