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A 33-year-old man in Hong Kong has contracted COVID-19 twice this year in what is said to be the first documented case of reinfection
newsbytesapp.com/timeline/world…
The man had been infected earlier this year in March and got reinfected in August, the study said

According to the pre-print study, the man's second case of COVID-19 occurred 142 days after the first bout
The 33-year-old had first tested positive for the virus on March 26

He experienced a cough, sore throat, fever, and headache

During the second infection, the man tested positive during entry screening at the Hong Kong airport on August 15

He remained asymptomatic this time
According to the study, the first infection was caused by a coronavirus strain most closely related to the strains circulating in the United States or England while the second infection was most closely related to strains from Switzerland and England
newsbytesapp.com/timeline/world…
The study indicates that SARS-CoV-2 may persist in humans in spite of acquired immunity, much like the coronaviruses causing common cold, the researchers noted
Dr. Kelvin Kai-Wang To of the University of Hong Kong - "The finding does not mean taking vaccines will be useless"

"Immunity induced by vaccination can be different from those induced by natural infection"
Researchers said that even people who have been infected should get vaccinated whenever a vaccine becomes available

They added, "Patients with previous COVID-19 infection should also comply with epidemiological control measures such as universal masking and social distancing"
Maria Van Kerkhove—WHO's technical lead for coronavirus response —said, "What I think is really important is that we put this into context"

She said, "There's been more than 24 million cases reported to date

And we need to look at something like this on a population level"
Dr. Paul Hunter—a professor in medicine at the University of East Anglia's Norwich School of Medicine—said the findings are "not surprising" since the viruses involved in both infections were different

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Hyderabad-based Bharat Biotech has been allowed to conduct a trial to test administer its COVID-19 vaccine candidate through the skin (intradermal vaccine delivery)
newsbytesapp.com/timeline/india…
The method is said to be more effective as it requires a lower dose of vaccine compared to intramuscular routes, thus lowering the per injection cost

The vaccine candidate, called COVAXIN, is already undergoing trials for intramuscular vaccine delivery
Bharat Biotech, which developing COVAXIN in collaboration with the Indian Council of Medical Research (ICMR), has now become the first Indian company to be experimenting a potential vaccine in both intradermal and intramuscular methods
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The data from serological tests, conducted by Thyrocare Labs on about 2.7 lakh people, shows that 26% Indians (average) have already contracted the novel coronavirus disease
newsbytesapp.com/timeline/india…
They have neutralizing antibodies in their blood, which is the immune response a body automatically generates to fight off the potentially deadly virus - Dr. A Velumani, the MD of Thyrocare Labs
The figure suggested by Dr. Velumani indicates that at least 1 in 4 Indians have already recovered from the virus and are now protected against it

In July, the company had provided an estimate of 15% but that was from a smaller sample of 53,000
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A strain of the novel coronavirus that is 10 times more infectious has been found in Malaysia
newsbytesapp.com/timeline/world…
The mutated strain of SARS-CoV-2 involves a D614G mutation

The mutation changes the amino acid at position 614 from D (aspartic acid) to G (glycine)

There has been a rising prevalence of the G614 variant, which is said to be 10 times more infectious
In Malaysia, the mutation was found in at least three cases in a cluster of 45

The cluster started from a man, who is a restaurant owner, returning from India

The mutation was also detected in another cluster with people returning from the Philippines
newsbytesapp.com/timeline/world…
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