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Antibodies produced from infection with SARS-CoV-2 501Y.V2 protect against other variants

Antibodies produced from infection with SARS-CoV-2 501Y.V2 protect against other variants
As the coronavirus disease 2019 (COVID-19) pandemic continues to claim thousands of lives daily around the world, the pathogen responsible for it, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), continues to undergo mutational changes. A recent paper in the journal
Nature shows that while earlier lineages do not elicit antibodies capable of efficiently neutralizing the newly emerged South African variant, SARS-CoV-2 501Y.V2 (B.1.351), the converse does occur.
The SARS-CoV-2 501Y.V2 variant
The constant occurrence of mutations in the various regions of the viral genome has led to the emergence of a multitude of variants, some of which have become global variants of concern (VOCs). ....

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Compromised immunity can allow SARS-CoV-2 to evade the immune system

Compromised immunity can allow SARS-CoV-2 to evade the immune system
The vast majority of people infected with SARS-CoV-2 clear the virus, but those with compromised immunity such as individuals receiving immune-suppressive drugs for autoimmune diseases can become chronically infected. As a result, their weakened immune defenses continue to attack the virus without being able to eradicate it fully.
This physiological tug-of-war between human host and pathogen offers a valuable opportunity to understand how SARS-CoV-2 can survive under immune pressure and adapt to it.
Now, a new study led by Harvard Medical School scientists offers a look into this interplay, shedding light on the ways in which compromised immunity may render SARS-CoV-2 fitter and capable of evading the immune system. ....

South Africa , United States , South African , Jonathan Abraham , Sarah Clark , Emily Henderson , Massachusetts Consortium On Pathogen Readiness Mass , World Health Organization , Harvard Medical School , Blavatnik Institute , New England Journal , World Health , Study Senior Author , Assistant Professor , Harvard Medical , Massachusetts Consortium , Pathogen Readiness , Sars Cov 2 , Immune System , Medical School , Monoclonal Antibody , Spike Protein , ஒன்றுபட்டது மாநிலங்களில் , சாரா கிளார்க் , எமிலி ஹென்டர்சன் , மாசசூசெட்ஸ் கூட்டமைப்பு ஆன் நோய்க்கிருமி ரெடிநெஸ் நிறை ,

New SARS-CoV-2 lineage has spread across many Brazilian states

New SARS-CoV-2 lineage has spread across many Brazilian states
Researchers in Brazil have identified the emergence of a new lineage of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Brazil that has spread across multiple states in the country.
The SARS-CoV-2 virus is the agent responsible for the coronavirus disease 2019 (COVID-19) that continues to pose a threat to global public health and the worldwide economy.
Marilda Siqueira from the Oswaldo Cruz Institute (Fiocruz) in Rio de Janeiro and colleagues say this new variant of interest (VOI) probably emerged in August 2020 and is already widely distributed in Brazil.
Designated as N.9, the variant emerged in the B.1.1.33 lineage and comprised 35% of all B.1.1.33 sequences detected between November 2020 and February 2021. ....

Sao Paulo , Rio De Janeiro , Estado Do Rio , Minas Gerais , Estado De Pernambuco , Marilda Siqueira , Sally Robertson , Genomic Surveillance Network , Oswaldo Cruz Institute Fiocruz , Oswaldo Cruz Institute , Image Credit , Surveillance Network , Santa Catarina , Sars Cov 2 , Corona Virus , Coronavirus Disease Covid 19 , Public Health , Severe Acute Respiratory , Severe Acute Respiratory Syndrome , Spike Protein , ஸ்ம் பாலொ , ரியோ டி ஜானிரோ , எஸ்டாடோ செய் ரியோ , மினாஸ் கெரைச் , எஸ்டாடோ டி பரர்ந்யாஂப்யூகொ , மரில்டா ஸிக்வெர ,

Ferret study shows SARS-CoV-2 airborne transmission dynamics

Ferret study shows SARS-CoV-2 airborne transmission dynamics
A team of researchers led by Sander Herfst from Erasmus University Medical Center in The Netherlands suggests severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) could spread through the air at a one-meter distance and cause infection in a new ferret model study.
They also found the SARS-CoV-2 can be dispersed through ferret fur, indicating a brand-new mode of transmission.
Schematic representation of the set-up to assess transmission over >1 m distance. An inoculated donor ferret is housed in the bottom cage and the next day, an indirect recipient ferret is added to the top cage. The cages are connected through a hard duct system consisting of four 90° turns. The system is built of several horizontal and vertical 15 cm wide PVC pipes that allow upward airflow from the donor to the indirect recipient animal. The average length of the duct system is 118 cm with the shortest and longest length 7 ....

Jocelyn Solis Moreiramar , Sander Herfst , Jocelyn Solis Moreira , Nature Communications , Erasmus University Medical Center , Coronavirus Disease Covid 19 , Sars Cov 2 , Corona Virus , Severe Acute Respiratory , Severe Acute Respiratory Syndrome , ஜாஸ்லைந் ஸோலிஸ் மோர்ர , இயற்கை தகவல்தொடர்புகள் , ஈராஸ்மஸ் பல்கலைக்கழகம் மருத்துவ மையம் , கொரோனா வைரஸ் , கடுமையானது எடுப்போசை சுவாச , கடுமையானது எடுப்போசை சுவாச நோய்க்குறி ,

Welcome To IANS Live - INTERNATIONAL - Aus hotel locked down over likely Covid spread

Last week, a local doctor had tested positive for the B117 strain of virus after treating two patients who were transferred from the hotel to a nearby hospital, Xinhua news agency reported on monday.Subs ....

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