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Protection Against SARS-CoV-2 Wanes Months After BNT162b2 Vaccination

Humoral responses and the effectiveness for protection against SARS-CoV-2 infection decline in the months following vaccination with the Pfizer-BioNTech BNT162b2 vaccine. ....

Ad Daw Ah , Tel Hashomer , Einavg Levin , Hiam Chemaitelly , Sheba Medical Center , Healthday News , New England Journal , Weill Cornell Medicine Qatar ,

Natural Immunity and Covid-19: Twenty-Nine Scientific Studies to Share with Employers, Health Officials, and Politicians

Natural Immunity and Covid-19: Twenty-Nine Scientific Studies to Share with Employers, Health Officials, and Politicians
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United States , Jie Zhang , Kathrynm Hastie , Eli Magen , Thomasc Friedrich , Hanna Nohynek , Joela Malek , Elizaveta Kalaidina , Carson Norwood , Paulg Carty , Jason Neidleman , Eugene Merzon , Patrickc Burke , Sivan Gazit , Amys Nowacki , Nina Ekstr , Stevenm Gordon , Brianna Doratt , Jenniferm Dan , Zhao Lin , Anna Solastie , Eytan Ruppin , Julie Czartoski , Peter Coyle , Artoa Palmu , Amir Ben Tov ,

Qatar study reveals high effectiveness of COVID-19 vaccines in preventing severe illness due to UK, South African variants


COVID-19 vaccination in Qatar is highly effective at warding off severe illness due to infection from the UK and South African variants, a Qatar study has found.
The research study, carried out by investigators and collaborators from the country’s health sector and research institutes, has been published in the New England Journal of Medicine.
The study looked into a wide range of clinical data in national COVID-19 databases, from February 1 to March 31, 2021, including vaccination data, antibody and PCR test results, COVID-19 hospitalizations, and infection severity data. 
Professor of Infectious Disease Epidemiology at Weill Cornell Medicine-Qatar and Lead investigator of the study, Professor Laith Abu-Raddad highlighted the significance of the findings. ....

South Africa , United Kingdom , South African , Abdullatif Al Khal , Al Khal , Hiam Chemaitelly , National Health Strategic Group , New England Journal , Infectious Disease Epidemiology , Weill Cornell Medicine Qatar , Professor Laith Abu Raddad , Professor Abu Raddad , Infectious Diseases , Hamad Medical Corporation , Ramadan Page , ஒன்றுபட்டது கிஂக்டம் , அப்துல்லடிபி அல் கால் , அல் கால் , தேசிய ஆரோக்கியம் மூலோபாய குழு , புதியது இங்கிலாந்து இதழ் , தொற்று நோய் தொற்றுநோய் , வெயில் கார்னெல் மருந்து கத்தார் , தொற்று நோய்கள் , ஹமாத் மருத்துவ நிறுவனம் ,