40–45pc who contract new coronavirus are asymptomatic

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A new study warns that around 40–
45% of people who contract
SARS-CoV-2 most likely remain symptom-free. Such cases may contribute to the “silent spread” of the virus. Moreover, even asymptomatic people may experience long-term respiratory issues, the study authors caution
In considering the spread dynamics of the new coronavirus — or SARS-CoV-2 — researchers, and health authorities have been pondering the importance of “silent” transmission.
This concept says that people who may have contracted the virus but who do not experience any symptoms could unwittingly contribute to the spread by not realizing they are carriers.
Dr. Topol and Oran reviewed the data of SARS-CoV-2 studies that included clear information about testing methods for diagnosing infection with the virus.
They ended up assessing studies of 16 different cohorts, including groups of cruise ship passengers, prison inmates, and nursing home residents tested for COVID-19. “What virtually all of them had in common was that a very large proportion of infected individuals had no symptoms,” notes Oran commenting on the findings.
BLOOD DONATION: ‘COMPLETELY ALTRUISTIC, SO MUCH BENEFIT TO SO MANY PEOPLE: Why are blood donations so important, including during a pandemic? Who benefits from them? And what happens when a person goes to donate blood? To find out, Medical News Today interviewed consultant hematologist Dr. Joel Newman
Blood is a precious resource in healthcare the world over. According to data from the American Red Cross, in the United States alone, an estimated 6.8 million people choose to donate blood.
The World Health Organization (WHO) note that, at a global level, blood donation centers collect around 118.5 million blood donations every year.
According to the WHO, in low income countries, children younger than 5 years old are the primary beneficiaries of blood donations, while in high income countries, older adults aged 60 years and above are on the receiving end of most blood transfusions. But, regardless of where in the world people live, why is it so important that they donate blood if they can? Who benefits from all the transfusions, and why? And why should people keep on donating blood during a pandemic? Dr. Joel Newman: It depends [on] whereabouts you’re giving [blood] and everywhere does it slightly differently, but in general, there’s either a questionnaire or a health check, either on the phone beforehand or physically in the blood donation center.