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The study included 294 participants who presented with symptoms of thrombocytopenia and thrombosis after receipt of the first dose of the Oxford–AstraZeneca COVID‑19 vaccine, showing an independent association between baseline platelet count and the presence of intracranial hemorrhage. The study established that 85% of the participants ...
Preliminary analysis of the latest real-world data from South Africa shows that while two shots of the vaccine alone may not stop an infection, it will help avoid serious illness.
The interplay between the SARS-CoV-2 virus and its human hosts was initially natural but is now being altered by the prompt availability of vaccines. [451] The potential emergence of a SARS-CoV-2 variant that is moderately or fully resistant to the antibody response elicited by the COVID-19 vaccines may necessitate modification of the vaccines ...
The Pfizer/BioNTech vaccine generates a robust immune response in 99% of people after one dose, new research suggests. One dose of the vaccine protects against severe disease and after two jabs ...
In April 2023, Pfizer published their interim results of their phase III study of a RSV vaccine for adults age 60 and older in over 34,000 participants. One dose of the vaccine was 67% efficacious in preventing infections with at least two symptoms and it was 86% effective against more severe disease, in people with three related symptoms.
Pfizer's omicron Covid booster generates stronger immune response against the omicron subvariants BA.4 and BA.5 compared to the original Covid, the company said Friday.
Severe cases are most common in older adults (those older than 60 years, [73] and especially those older than 80 years). [100] Many developed countries do not have enough hospital beds per capita , which limits a health system 's capacity to handle a sudden spike in the number of COVID-19 cases severe enough to require hospitalisation. [ 101 ]
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