A new study by infectious disease experts in Singapore ensures that Covid-19 patients are not infectious after 11 days of contracting the disease.
A positive test "does not equate to infectivity or a viable virus," says a joint research document from the National Center for Infectious Diseases in Singapore and the National Academy of Medicine.
The work, which was based on a study of 73 patents in the city-state, indicates that the virus "could not be isolated or cultivated after day 11 of the disease", according to what was recorded by Bloomberg.
This finding may have implications for the measures applied for patients who are discharged. Nowadays, discharge criteria are based on negative test results, rather than infectiousness.
Singapore's strategy for treating patients with Covid-19 is guided by the latest local and international clinical scientific evidence. However, a report from the Straits Times, quoted by Bloomberg, indicates that The Singapore Ministry of Health will evaluate whether the latest tests can be incorporated into its clinical treatment plan for patients.
So far, 13,882, about 45% of the total of 31,068 Covid-19 patients in Singapore, have been discharged from hospitals and community facilities. The Asian country, meanwhile, reported 642 new cases of coronavirus until noon on Saturday.
Like the vast majority of countries, the Government is in the process of being out of control. For that reason, In recent days, he has been actively examining preschool staff as he prepares to reopen them starting June 2.
Amid these efforts, the Ministry of Health reported that last Friday two preschool employees tested positive for coronavirus, bringing to seven the total number of confirmed cases among preschool staff.
According to a database compiled by Gwenan Knight and colleagues at the London School of Hygiene & Tropical Medicine (LSHTM), Singapore was one of the countries to experience a massive outbreak in a migrant worker dormitory, related to nearly 800 cases. Something similar happened in Osaka, Japan, where 80 infections linked to live music venues were recorded; and in South Korea, where there were 65 confirmed cases after a zumba class. Other supercontacts occurred on board ships and in nursing homes, in meat packing plants, ski resorts, churches, restaurants, hospitals, and prisons.
Sometimes a single person infects dozens of people, while other times the contagion groups are the result of several generations of spread, in multiple places.
Other infectious diseases are also spread by clusters, and with about 5 million reported cases of COVID-19 worldwide, some major outbreaks were expected. But SARS-CoV-2, like two of its cousins - Severe Acute Respiratory Syndrome (SARS) and Middle East Respiratory Syndrome (MERS) - has an apparently whimsical behavior: it seems especially prone to attacking groups of closely connected people while avoiding others.
This is an encouraging finding, say scientists responsible for several studies cited by a journal article. Sciene, why suggests that restricting meetings where a "super contagion" is likely to occur will have a significant impact on transmission, while other restrictions, for example, outdoor activities, could be avoided.
"If you can predict what circumstances are giving rise to these events, the math shows that you really could very quickly reduce the ability to spread the disease," he said. Jamie Lloyd-Smith, from the University of California, Los Angeles.
The new findings determined that some people infect many others and others do not transmit the disease at all. In fact, the latter is the most common, says Lloyd-Smith: “The consistent pattern is that the most common number is zero. Most people don't broadcast it. "
Time also plays a role in the spread of coronavirus. The evidence the scientists are handling suggests that COVID-19 patients are highly infectious for a short period of time.
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