6 hours agoCoronavirus revolutions are possible, should we worry?
Periskopi(6 years ago)
(6 years ago)The patient arrived for testing at Washoe County, Nevada on April 18th with a throatache, dry coughs and headaches, but there was no reason for concern. He was only 25 years old, was completely healthy, and although he proved positive, he was soon healed without difficulty. Thirty - five days later, he was [...]
Thirty - five days later, he was rushed to the hospital, gasp, and fever. It was immediately put into oxygen therapy and became the first person in the United States to be confirmed re-infected by coronarys.
So far, a number of such cases have been reported worldwide, and experts say it is too early to draw conclusions for such a small sample.
But the possibility of re-infectation, especially if the second clinical mirror is heavier, it can have a huge impact on the way governments react to pandemic. For example, the idea of receiving collective immunity due to possible reinfectation becomes unrealistic.
“Ry infection means that immunity acquired through a natural infection is not perfect,” said Akiko Iwasaka, a professor of immubiology in Yale.
Scientists studying the Nevada case offer possible explanations of why the patient was infected twice.
It may have been exposed to a very high dose of the virus in the second case, which caused a more severe reaction and possibly was a more virulent type of virus.
A study published this week in Lancent cites confirmed re-infectation cases in Belgium, Holland, Hong Kong and Ecuador.
First time really is second?
Frederic Altar, director of the Department of Immmunology at the Oncology Research Centre and the Nantes-Angers, says that for now, re-infectations do not seem to be a major problem “given how many people in the world are infected and how few are the proven”.
But another group of scientists warns that there were relatively few tests at the beginning of the pandemic. In other words, there may have been many asymmetric cases in March and April that were tested as positive later in the year, when they were infected for the second time but later with symptoms.
The main obstacle to assessing the number of reinfectations is the fact that SARS-CoV-2 is, in terms of epidemiological, completely young, said Jeffrey Shaman, a professor at Columbia University School of Public Health.
“Bota has only been dealing with this virus for several months. We don't know whether reinfectation will be a common thing and whether it will be as heavy as the first time,” he said.
Meanwhile, scientists may seek a link between similar viruses. Lia van der Hoek, a coronary expert at Amsterdam University Medical Centre (UMC), has studied this kind of pathogen for decades.
She is the lead author of an article published last month in Nature Medicine magazine that investigates four other known coronavirus that can infect people.
Over 30 years, ten healthy individuals were monitored, showing themselves infected with the same virus many times. One of them made 17 times. “CO VID-19 will likely behave equally,” Hoek told AFP.
Van der Hoek notes that there could never be a single vaccine for COVID-19.
The problem with coronary antibodies is that they quickly disappear and you can rebe infected with the same type. Therefore, it is possible that the vaccine will have to be repeated several times,” said Van der Hoek, which is very pessimistic about the possibility of the new coronary disappearing itself.
He's not going anywhere. There's no way we're gonna get rid of him. He will stay with us for the rest of the world,” is expressed.
