Covid-19: Scientists develop novel method to detect single virus particles

TOKYO: Scientists have developed a new method for identifying single virus particles based on changes in electrical current when they pass through ultrasmall pores, an advance which they claim may lead to new rapid Covid-19 tests. The study, published in the journal ACS Sensors, demonstrated a new system for identifying single virus particles using an algorithm trained to detect changes in the current passing across silicon nanopores. According to the scientists, including those from Osaka University in Japan, the work may lead to fast and accurate screening tests for diseases…

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Many countries have shown COVID-19 can be controlled, even without coronavirus vaccine: WHO | Health News

Geneva: The World Health Organization’S (WHO) Director-General Tedros Adhanom Ghebreyesus has said that there are many countries that have shown COVID-19 can be controlled, even without a coronavirus vaccine. “All countries have been affected, but not all countries have been affected equally. There are many countries all over the world that have shown COVID-19 can be controlled with existing tools,” said Ghebreyesus. “One of the things all these countries have in common is an emphasis on testing,” he added. He stated that since the beginning of the pandemic, WHO has…

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Will COVID-19 vaccine protect you from novel coronavirus? Know likely side-effects | Health News

New Delhi: The coronavirus outbreak that was first reported in December 2019 in China, has brought the whole world to a standstill. Over 7 billion people around the world have been waiting for the COVID-19 vaccine now, which has currently more than 100 candidates under development, with a number of these in the human trial phase.  As per the World Health Organization (WHO), immunization currently prevents 2-3 million deaths every year from diseases like diphtheria, tetanus, pertussis, influenza and measles and there are now vaccines to prevent more than 20…

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Russia’s Sputnik V COVID-19 vaccine 95 per cent effective, to cost less than USD 20 in international market | Health News

Moscow: Russia’s Sputnik V COVID-19 vaccine efficacy is above 95 per cent, 42 days after the first dose and will cost less than $20 for the international market, the National Research Center for Epidemiology and Microbiology and Russian Direct Investment Fund (RDIF) announced on Tuesday (November 24, 2020). “The preliminary data on volunteers on the 42nd day after the first dose (equivalent to 21 days after the second dose), when they have already formed a stable immune response, indicates the efficacy rate of the vaccine is above 95%,” read the official…

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Coronavirus infection may offer protection from reinfection for this long; read here | Health News

London: A new UK study has suggested that individuals who have previously contracted COVID-19 are highly unlikely to contract the illness again for at least six months following their first infection. The study, done as part of a major collaboration between the University of Oxford and Oxford University Hospitals (OUH) NHS Foundation Trust involving frontline healthcare workers, suggests that most people are unlikely to get COVID-19 again if they have already had it in the previous six months. “This is really good news because we can be confident that, at…

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Covid-19 reinfection unlikely for at least 6 months, study finds

LONDON: People who’ve had Covid-19 are highly unlikely to contract it again for at least six months after their first infection, according to a British study of healthcare workers on the frontline of fight against the coronavirus pandemic. The findings should offer some reassurance for the more than 51 million people worldwide who have been infected with the pandemic disease, researchers at the University of Oxford said. “This is really good news, because we can be confident that, at least in the short term, most people who get Covid-19 won’t…

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The coronavirus is airborne indoors. But we’re still scrubbing surfaces

HONG KONG: At Hong Kong’s deserted airport, cleaning crews constantly spray baggage trolleys, elevator buttons and check-in counters with antimicrobial solutions. In New York City, workers continually disinfect surfaces on buses and subways. In London, many pubs spent lots of money on intensive surface cleaning to reopen after lockdown — before closing again in November. All over the world, workers are soaping, wiping and fumigating surfaces with an urgent sense of purpose: to fight the coronavirus. But scientists increasingly say that there is little to no evidence that contaminated surfaces…

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Three kids of COVID-19 positive parents in Australia develop antibodies without being coronavirus infected | Health News

Melbourne: In an unusual case, three kids of COVID-19 positive parents in Melbourne (Australia) have developed antibodies without ever being infected with the coronavirus.  The article published in the ‘Nature Communications’ journal said that the data indicates that children can mount an immune response to SARS-CoV-2 without virological confirmation of infection, raising the possibility that immunity in children can prevent the establishment of COVID-19 infection. The authors described clinical features, virology, longitudinal cellular, and cytokine immune profile, SARS-CoV-2-specific serology and salivary antibody responses in a family of two parents with…

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Pfizer final analysis of Phase 3 study indicates COVID-19 vaccine efficacy rate of 95% | Health News

NEW YORK: The Pfizer and BioNTech on Wednesday (November 18, 2020) announced that after conducting the final efficacy analysis in their ongoing Phase 3 study, their COVID-19 vaccine, BNT162b2, met all of the study’s primary efficacy endpoints and the analysis of the data indicates a vaccine efficacy rate of 95% in participants without prior SARS-CoV-2 infection (first primary objective) and also in participants with and without prior SARS-CoV-2 infection (second primary objective), in each case measured from 7 days after the second dose.  “The first primary objective analysis is based…

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E-cigarette users may have increased susceptibility to coronavirus | Health News

Washington: In a controlled study of smokers, nonsmokers, and e-cigarette users, University of North Carolina School of Medicine researchers found that e-cigarette users exhibited significantly altered immune responses to a model of influenza virus infection, suggesting increased susceptibility to disease. The findings, published in the American Journal of Respiratory Cell and Molecular Biology, show that vaping changes the expression of genes and production of proteins in respiratory cells, as well as altering virus-specific antibody production. “In many of the study participants, we observed more changes to the immune response in…

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Can first COVID-19 vaccines bring herd immunity? Experts have doubts | Health News

LONDON: Governments and officials are voicing hopes that COVID-19 vaccines could bring “herd immunity”, with some calculating that immunising just two-thirds of a population could halt the pandemic disease and help protect whole communities or nations. But the concept comes with caveats and big demands of what vaccines might be capable of preventing. Some experts say such expectations are misplaced. For a start, figuring out what`s needed to achieve herd immunity with coronavirus vaccines involves a range of factors, several of which are unknown. What is the rate of the…

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Covid-19: Can surgical masks be reused?

PARIS: Health authorities say the most widespread anti-Covid weapon — surgical masks — must be thrown away after a single use, but environmental concerns are pushing some scientists to question this recommendation. As the coronavirus continues to spread, masks have in many places become mandatory on public transport, in shops and at work. But cost has become an issue, as has the fact so many disposable plastic masks wind up in waterways and the oceans. One alternative is reusable cloth masks, but many people prefer single-use surgical masks because they…

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