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By April, with a surge in COVID cases in a third wave of infections, Sri Lanka faced a severe shortage of the Astra-Zeneca vaccine due to an export ban by India. [4] This left majority of the 3.5% of the population that was given the first dose without access to the second. [ 5 ]
The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, [2] [33] is an mRNA-based COVID-19 vaccine developed by the German biotechnology company BioNTech. For its development, BioNTech collaborated with the American company Pfizer to carry out clinical trials , logistics, and manufacturing.
The COVID-19 pandemic in Sri Lanka is part of the ongoing worldwide pandemic of coronavirus disease 2019 (COVID-19) caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus. The first case of the virus in Sri Lanka was confirmed on 27 January 2020, after a 44-year-old Chinese woman from Hubei , China , was admitted to ...
Hospitalisations and deaths from Covid-19 have been rising for weeks in the US, and global health authorities are monitoring two new variants, BA.2.86, known as Pirola, and EG.5, known as Eris.
How COVID‑19 vaccines work. The video shows the process of vaccination, from injection with RNA or viral vector vaccines, to uptake and translation, and on to immune system stimulation and effect. Part of a series on the COVID-19 pandemic Scientifically accurate atomic model of the external structure of SARS-CoV-2. Each "ball" is an atom. COVID-19 (disease) SARS-CoV-2 (virus) Cases Deaths ...
BioNTech and Pfizer said on Wednesday a three-shot course of their COVID-19 vaccine was shown to generate a neutralising effect against the new Omicron variant in a laboratory test. In the first ...
The reasoning is because in the 20-29 age range the benefits to individual of vaccination were less as their likelihood of harm from COVID‑19 is less and closer to the potential risk of harm from the vaccine (at a medium exposure risk with COVID‑19 infection cases running at a rate of 60 per 100,000).
The COVID-19 vaccine developed by Pfizer and its German partner BioNTech remains 91% effective at protecting against coronavirus for at least six months after the second dose.