What is the definition to declare that 'the new coronavirus infection is completely cured'?
The new type of coronavirus infection (COVID-19) may cause pneumonia when it becomes severe, but in some cases, symptoms such as fever and cough subside in about one week. However, there are cases where the virus remains in the body even if the cough does not appear due to the decrease in heat. Tom Dasinski, director of the Public Epidemiology Program at the Indiana Department of Health, describes the criteria for 'COVID-19 has been completely cured.'
What does 'recovered from coronavirus' mean? 4 questions answered about how some survive and what happens next
When infected by a virus, the body's immune system produces 'antibodies' based on viral proteins called 'antigens.' This antibody inactivates the virus and prevents it from replicating, making it less susceptible to infection and reducing the symptoms of infection.
If antibodies are successfully produced in the body of a person infected with the new coronavirus (SARS-CoV-2), they tend to recover after the onset of symptoms and a week-long decline in physical condition. However, since the virus is only inactivated to prevent replication, the virus may remain in the body even if the body recovers. That said, Dasinsky cautioned that even if he became sick, he had to work on self-isolation for another three days and wait until the virus was no longer spread.
Mr. Dasinski says that in order to formally declare `` recovered from COVID-19 '' in the United States, it must meet both the medical and laboratory criteria presented by the Centers for Disease Control and Prevention (CDC) of the United States .
As a medical standard, CDC states that `` fever is not seen for at least 3 consecutive days without administration of antipyretic drugs '', `` no respiratory symptoms such as coughs and shortness of breath are seen '' and `` at least 7 days after onset 'The passage' should be fulfilled.
The CDC also defines the test criteria as 'a new coronavirus PCR test must be performed twice at least every 24 hours, and both tests are negative.' 'Only patients who meet both the medical and testing criteria for CDC can formally declare' recovered from COVID-19, '' said Dasinsky.
However, PCR tests required for testing standards are given priority to those who are suspected of becoming infected with COVID-19 infection due to the shortage of medical staff and the number of test kits . Therefore, at the time of writing the article, it may be difficult for those who may have recovered to perform PCR tests. However, in view of this situation, many medical companies and research organizations are developing new tests, and in March 2020 a new test kit that can be tested in just 10 minutes and costs only $ 1 (about 110 yen) Is also being developed.
`` 100 yen test kit '' that can test for new coronavirus infection in just 10 minutes has appeared-gigazine
It is not yet clear how the immune system reacts to SARS-CoV-2. SARS-CoV-2 is said to be a sub-species of SARS virus that caused severe acute respiratory syndrome (SARS) worldwide in 2003, and it has been confirmed that SARS virus produces antibodies by the immune system. I am. However, studies have shown that one-third of those who have recovered from COVID-19 have low SARS-CoV-2 antibody levels, and may be reinfected even after a complete cure.
Report that antibody level is low in one third of people who recovered from new type coronavirus infection-gigazine
Nevertheless, if future studies show that the human immune system is sufficiently responsive to SARS-CoV-2, it will be possible to support the healthcare system by supporting recovered individuals to support infected individuals. Yes, Dasinski claims.
'While communities are at the peak of the epidemic, the number of newly infected people will decrease and the number of people who have recovered will increase,' said Dasinsky, saying that it can take months for society to reduce the risk of transmission. As these trends continue, the risk of transmission will decrease.If the risk of transmission is sufficiently low, isolation and social distance at the community level will be reduced, and the economy will start running again. ' I said.
Related Posts:
in Science, Posted by log1i_yk