China coronavirus second wave outbreak: Panic as woman infected for SECOND time

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The 68-year-old woman tested positive for coronavirus six months after first testing positive for the disease. The woman first contracted the illness in February and received a second positive test result on August 9. Officials are urging people not to panic.

She is now under quarantine and undergoing treatment in Jingzhou, a city in central China.

Local Government said all those she has been in contact with have tested negative for the disease.

They also said there is no evidence of a risk of transmission from relapsed cases.

It is not the first time someone has tested positive for coronavirus a second time.

An Israeli doctor was diagnosed with the illness for a second time last month, while others in China and Japan have also tested twice for COVID-19.

But some experts have been sceptical about the findings and suggested these cases were anomalies caused by testing errors.

However, new research suggests coronavirus immunity could only last for six months.

Scientists at the University of Amsterdam tested 10 men for four different coronaviruses, which cause the common cold, regularly over the course of 35 years.

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They found there was “an alarmingly short duration of protective immunity”.

The researchers said: “We saw frequent reinfections at 12 months post-infection and substantial reduction in antibody levels as soon as six months post-infection.”

As a result, the experts warned population-level surveys using antibody testing to estimate how many people had been infected would become of limited use as time went on.

King’s College London scientists also found immunity to coronavirus could be lost within just months of contracting the illness.

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They discovered levels of antibodies, the body’s main line of defence, were at their highest around three weeks after symptoms arose but quickly decline.

It found 60 percent of the almost 90 patients who participated in the study, had a “potent” antibody response at the peak of their battle with coronavirus.

Within three weeks blood tests revealed only 17 percent had retained the same levels, which had fallen as much as 23-fold – some becoming undetectable.

But a virologist at Reading University suggested patients might actually have long-lasting immunity after contracting the deadly illness.

Ian Jones said: “In the case of Covid even partial protection might be fine as long as it was enough to stop people dying.”

Similarly Professor Robin Shattock, of Imperial College London, suggested if a patient were to be re-infected, the disease would be less severe due to immune memory.

But he acknowledged the risk of transmission still remained high.

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