Coronavirus Patients Cannot Spread The Disease After 11 Days – Study

Recent study by researchers from Singapore have discovered that coronavirus patients cannot infect others after 11 days of being ill, even if they still test positive.

The scientists also revealed that an infected person becomes contagious around 2 days before symptoms show.

The research was wrapped up after the scientists from Singapore’s National Centre for Infectious Diseases and the Academy of Medicine examined 73 patients with coronavirus.

The medical practitioners added that symptoms may persist for about seven to 10 days after it starts, but not longer than that.

A recent statement read, “Based on the accumulated data since the start of the COVID-19 pandemic, the infectious period of coronavirus in symptomatic individuals may begin around two days before the onset of symptoms, and persists for about seven to 10 days after the onset of symptoms.”

The scientists involved hope that their research on the disease’s ability to spread could help hospitals figure out when to send admitted patients home.

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Coronaviruses are a group of related viruses that cause diseases in mammals and birds. In humans, coronaviruses cause respiratory tract infections that can be mild, such as some cases of the common cold (among other possible causes, predominantly rhinoviruses), and others that can be lethal, such as SARS, MERS, and COVID-19. Symptoms in other species vary: in chickens, they cause an upper respiratory tract disease, while in cows and pigs they cause diarrhea. There are yet to be vaccines or antiviral drugs to prevent or treat human coronavirus infections.

Coronaviruses constitute the subfamily Orthocoronavirinae, in the family Coronaviridae, order Nidovirales, and realm Riboviria. They are enveloped viruses with a positive-sense single-stranded RNA genome and a nucleocapsid of helical symmetry. The genome size of coronaviruses ranges from approximately 27 to 34 kilobases, the largest among known RNA viruses. The name coronavirus is derived from the Latin corona, meaning “crown” or “halo”, which refers to the characteristic appearance reminiscent of a crown or a solar corona around the virions (virus particles) when viewed under two-dimensional transmission electron microscopy, due to the surface covering in club-shaped protein spikes.

Human coronaviruses were first discovered in the late 1960s. The earliest ones discovered were an infectious bronchitis virus in chickens and two in human patients with the common cold (later named human coronavirus 229E and human coronavirus OC43). Other members of this family have since been identified, including SARS-CoV in 2003, HCoV NL63 in 2004, HKU1 in 2005, MERS-CoV in 2012, and SARS-CoV-2 (formerly known as 2019-nCoV) in 2019. Most of these have involved serious respiratory tract infections.