Why are the sun's outer rings so much hotter than the inner core?
Surrounding the sun is a layer of gas called the corona in plasma form with temperatures reaching over 3 million degrees.
Follow research and explainers on influenza, COVID-19, respiratory viruses, vaccines, transmission and public-health responses to infectious disease.
706 published items in this category and its subcategories.
Surrounding the sun is a layer of gas called the corona in plasma form with temperatures reaching over 3 million degrees.
The ions create a chemical reaction in the cell membrane that inactivates the virus, reducing it by 99.9% within minutes, according to Philip Tierno, a professor at New…
On July 22, the Covid-19 risk warning map in Hanoi changed from yellow to red, and the next day, Deputy Prime Minister Vu Duc Dam discussed with Hanoi Chairman Chu Ngoc…
Humans, since the advent of scientific and logical thinking, have always sought to limit everything to a specific number.
Prolonged fever after Covid-19 vaccination may not be a side effect of vaccination but a symptom of SARS-CoV-2 infection.
A group of experts in Italy said that some genes may be factors that help special cases not get infected with nCoV even though they are in close contact with F0.
Moderna's Covid-19 vaccine is 95% effective in preventing disease, but what's more impressive is that the company designed its vaccine in just two days in January 2020.
WHO recommends that people believe that wearing masks alone can prevent the acute pneumonia caused by the new corona virus is completely wrong. Let's see how to wear a m…
Scientists in Shanghai, China, said that nCoV can be transmitted through
The SARS-CoV-2 virus evolves, mutates, and will remain with humans for a long time.
The Delta variant replicates rapidly in cells, infected people have a short incubation period, the virus is concentrated in the upper respiratory tract so it is easily s…
A new discovery about
The pandemic has dramatically reshaped human life expectancy, with a more severe reduction than previous studies suggested.
Scientists have a new explanation for why adenovirus-based COVID-19 vaccines — like those from AstraZeneca and Johnson & Johnson — carry a risk of serious blood clots.
The Ministry of Health said that side effects of the AstraZeneca Covid-19 vaccine (if any) only occur within 28 days after use, and people who have been vaccinated shoul…