VAKCINA

rumbeando wrote:Objašnjeno je prilično ubedljivo zašto je efikasnost vakcine protiv delte u Izraelu slabija u pogledu zaražavanja i pojave simptoma, kačio sam već.

Izraelski podaci su s najvećim razmakom od vakcinacije do oboljevanja, a antitela se gube dosta brzo: vreme poluraspada je 2-3 meseca. Posle nekih 5 meseci ona više ne obezbeđuju mukozni imunitet pa dolazi do zaražavanja i širenja virusa i kod vakcinisanih. Za onemogućavanje težih slučajeva organizam se ne oslanja samo na antitela, već i na B i T ćelije pa je ono i dalje obezbeđeno.

It's big business. @Airfinity predicts an mRNA sales boom next year, driven by richer countries, where coverage is high and increasing. About 1% of the population in low income nations has received at least one Covid shot. https://t.co/ou5fNycxGO pic.twitter.com/9IpXN5JUPF

— donato (@donatopmancini) August 2, 2021

The new price for a Pfizer shot was €19.50 against €15.50 previously, according to portions of the contracts seen by the Financial Times.

The price of a Moderna jab was $25.50 a dose, the contracts show, up from what people familiar with the matter said was about €19 ($22.60) in the first procurement deal but lower than a previously agreed $28.50 because the order had grown, according to one official close to the negotiations.

Karachi, biggest Pakistani city, has kickstarted a 4 phase plan to motivate injection uptake : on 4th stage, those without injection will not have active SIM cards. https://t.co/asfoZVPg7J

— Lisa Proust (@lisa_proust) July 31, 2021

Since last night thousands of people lining up to get vaccinated in Karachi, Pakistan after Govt. decision to block phone SIM for unvaccinated. pic.twitter.com/FzvlCCdduY

— Camus (@camus37) August 1, 2021

Germany to recommend shots for those 12-17.
For high-risk individuals, including immunocompromised people and the elderly, a third vaccine dose will be available beginning this autumn.https://t.co/ferzKwHVrw

— Graham Lambert (@100glitterstars) August 1, 2021

Third mRNA dose may boost antibody quantity, but not quality

  Among fully vaccinated people who never had COVID-19, getting a third dose of an mRNA vaccine from Pfizer/BioNTech or Moderna would likely increase levels of antibodies, but not antibodies that are better able to neutralize new virus variants, Rockefeller University researchers reported on Thursday on bioRxiv https://bit.ly/3fnbk6Y ahead of peer review. They note that in COVID-19 survivors, the immune system's antibodies evolve during the first year, becoming more potent and better able to resist new variants. In 32 volunteers who never had COVID-19, they found that antibodies induced by mRNA vaccines did evolve between the first and second shots. But five months later, vaccine-induced antibodies were "equivalent" to those seen after the second dose, with "little measurable improvement" in the antibodies' ability to neutralize a broad variety of new variants, said coauthor Michel Nussenzweig. Therefore, he said, giving those individuals a third dose of the same vaccine would likely result in higher levels of antibodies that remain less effective against variants. "At the moment, the vaccine remains protective against serious infection," Nussenzweig said. "Should we learn that efficacy is indeed waning for serious infection, which is not really the case to date," then a booster dose of "whatever is available" might become appropriate, he added. Should an updated vaccine become available that protects against specific variants, "then that would be the choice."

Kada je reč o trećoj dozi vakcine, Kon je kazao da se ona daje osobama kojima je značajno oslabljen imunitet zbog prirode bolesti, odnosno, zbog transplantacije, hemodijalize, insulin zavisnog dijabetesa, kao i zbog malignoma i raznih bolesti koje obaraju imunitet.

"Sasvim je jasno da su ti pacijenti, te osobe u najvećem riziku i za njih se preporučuje vakcina. Da li će to biti jednog proizvođača, drugog proizvođača, zavisi od toga koju je vakcinu prvu primio, prema tome, to nije striktno odlučeno", kazao je Kon.

Dodao je da je preporučeno da treća doza bude vakcina koja je zasnovana na informacionoj RNK, ali, kako je objasnio, nema nijednog posebnog razloga za to.

"Važnije od svega je da se te osobe zaštite. I dalje nema preporuke SZO. Moramo još malo sačekati i jasno je da se ubrzava taj proces preporuke treće doze i biće sasvim sigurno u narednom periodu. Da li će biti za mesec-dva, videćemo", rekao je Kon.

ficfiric wrote:Bas zbog izbora bice sve - i treca doza za one gaze babe na samrti i dahtanje za vrat u atubusima, stadionima, koncertima za antivaksere