The "Paxlovid rebound" phenomenon has taken centre-stage&nbsp;after US President Joe Biden experienced a "rebound" case of COVID-19 last weekend after taking the drug.

The US president was detected with coronavirus again on Saturday even as White House physician Kevin O’Connor said the president hadn't experienced any reemergence of symptoms. O’Connor declared that there was no need to re-initiate treatment for the president.

<a href="https://www.wionews.com/world/pfizer-reports-record-profits-amid-growth-in-vaccine-paxlovid-pill-476179">Also Read:&nbsp;Pfizer reports record profits amid growth in vaccine, Paxlovid pill</a>

Reports claim Biden has taken booster doses. Biden in a tweet said it "happens with a small minority of folks" while declaring that he had no symptoms. Dr Anthony Fauci who had taken Paxlovid reportedly also experienced a "Paxlovid rebound".&nbsp;

What is "Paxlovid rebound"?

According to a study, Pfizer's antiviral drug Paxlovid has caused a "rebound" of the virus in some cases. The US Centers for Disease Control and Prevention (CDC) had earlier issued an update on virus rebound stating that Paxlovid is recommended for early stage treatment of mild to moderate COVID-19 cases which are at high risk of progression to&nbsp;severe disease.

Watch:&nbsp;Biden tests positive for COVID-19 again, returns to isolation

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Coronavirus "rebound" is characterized with the recurrence of symptoms after a person tests negative.

The CDC said Paxlovid prevented hospitalisation, however it added that the virus rebound has been reported to occur between two and eight days after initial recovery and "is characterised by the recurrence of COVID-19 symptoms or a new positive viral test after having tested negative."

"A brief return of symptoms may be part of the natural history of virus in infection in some persons, independent of treatment with Paxlovid and regardless of vaccination status," it said in its advisory. The US health agency added that it led to "mild illness" and there were no reports of "severe disease" with "no evidence" that additional treatment was needed with Paxlovid.

What is Paxlovid?

It is an oral antiviral drug and is available under Emergency Use Authorisation (EUA) by the US Food and Drug Administration (FDA). It is meant for adults and pediatric patients 12 years and older.

The CDC recommends the treatment should begin within five days as symptoms occur for people who have one or more risk of progression to severe disease. The CDC cautioned the patient should not display evidence of severe renal or hepatic impairment and should not be hospitalised at the time of treatment.

(With inputs from Agencies)

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The "Paxlovid rebound" phenomenon has taken centre-stage after US President Joe Biden experienced a "rebound" case of COVID-19 last weekend after taking the drug.

The "Paxlovid rebound" phenomenon has taken centre-stage after US President Joe Biden experienced a "rebound" case of COVID-19 last weekend after taking the drug. The US president was detected with coronavirus again on Saturday even as White House physician Kevin O’Connor said the president hadn't experienced any reemergence of symptoms. O’Connor declared that there was no need to re-initiate treatment for the president. Also Read: Pfizer reports record profits amid growth in vaccine, Paxlovid pill Reports claim Biden has taken booster doses. Biden in a tweet said it "happens with a small minority of folks" while declaring that he had no symptoms. Dr Anthony Fauci who had taken Paxlovid reportedly also experienced a "Paxlovid rebound". What is "Paxlovid rebound"? According to a study, Pfizer's antiviral drug Paxlovid has caused a "rebound" of the virus in some cases. The US Centers for Disease Control and Prevention (CDC) had earlier issued an update on virus rebound stating that Paxlovid is recommended for early stage treatment of mild to moderate COVID-19 cases which are at high risk of progression to severe disease. Watch: Biden tests positive for COVID-19 again, returns to isolation Coronavirus "rebound" is characterized with the recurrence of symptoms after a person tests negative. The CDC said Paxlovid prevented hospitalisation, however it added that the virus rebound has been reported to occur between two and eight days after initial recovery and "is characterised by the recurrence of COVID-19 symptoms or a new positive viral test after having tested negative." "A brief return of symptoms may be part of the natural history of virus in infection in some persons, independent of treatment with Paxlovid and regardless of vaccination status," it said in its advisory. The US health agency added that it led to "mild illness" and there were no reports of "severe disease" with "no evidence" that additional treatment was needed with Paxlovid. What is Paxlovid? It is an oral antiviral drug and is available under Emergency Use Authorisation (EUA) by the US Food and Drug Administration (FDA). It is meant for adults and pediatric patients 12 years and older. The CDC recommends the treatment should begin within five days as symptoms occur for people who have one or more risk of progression to severe disease. The CDC cautioned the patient should not display evidence of severe renal or hepatic impairment and should not be hospitalised at the time of treatment. (With inputs from Agencies) WATCH WION LIVE HERE

‘Paxlovid rebound’: Why is this Covid drug given to Biden controversial? Check details

China's economy expanded at its fastest pace on record in the first quarter, data showed Friday, in a sharp turnaround from the historic contraction caused by the coronavirus outbreak.

The world's second-largest economy was the only major one to grow at all in 2020, supported by strong retail spending and industrial activity as well as better-than-expected exports as the virus hit markets around the world.

It marks the fastest pace since quarterly records began three decades ago, though the GDP figure of 18.3 per cent is slightly below forecasts in an AFP survey of economists.

While the disease first emerged in central China in late 2019, the country was also the quickest to bounce back after authorities imposed strict control measures and consumers stayed home.

"The national economy made a good start," National Bureau of Statistics spokeswoman Liu Aihua told reporters Friday.

The sharp spike was partly due to "incomparable factors such as the low base figure of last year and increase of working days due to staff staying put during the Lunar New Year" holiday, said Liu.

Migrant workers had been urged to remain in the areas where they work during the break owing to fears that the annual massive migration might lead to local outbreaks.

But Liu added that quarter-on-quarter growth has "demonstrated a steady recovery".

Across key sectors, China powered on in its economic rebound after caution around the holiday period subsided and domestic consumption soared.

In March, the country's industrial output rose 14.1 per cent on-year, bringing first-quarter growth to 24.5 per cent, the official data showed.

Retail sales surged 34.2 per cent, picking up from the first two months and bringing first-quarter growth to 33.9 per cent as life largely returned to normal.

Liu, however, warned that the international landscape still contained "high uncertainties".

The urban unemployment rate ticked down slightly to 5.3 per cent, a figure analysts are watching closely as China's consumption rebound lags behind that of its industrial sectors.

"The recovery remains uneven, with private consumption lagging given rising unemployment," HSBC chief China economist Qu Hongbin said in a recent report.

Retail outperformance

But economists expect growth drivers could change in the months ahead.

"Industrial production has been taking the lead in recovery last year, and it looks a bit tired now," said UOB economist Ho Woei Chen, referring to its slower-than-expected growth.

"There is an expectation that with retail sales' outperformance and a recovering job market, that there is momentum picking up in private consumption," she told AFP, adding that this should take over the lead in growth later in the year.

But Oxford Economics' head of Asia economics Louis Kuijs cautioned that "a full rebound in household spending hinges on convincing vaccination and further improvements in labour market conditions".

Economists also added that China's post-coronavirus rebound is levelling off.

Julian Evans-Pritchard, the senior China economist at Capital Economics, said: "We expect quarter-on-quarter growth to remain modest during the rest of this year as the recent boom in construction and exports unwinds, pulling activity back towards trend."

China's economy expanded at its fastest pace on record in the first quarter, data showed Friday, in a sharp turnaround from the historic contraction caused by the coronavirus outbreak.

China's economy expanded at its fastest pace on record in the first quarter, data showed Friday, in a sharp turnaround from the historic contraction caused by the coronavirus outbreak. The world's second-largest economy was the only major one to grow at all in 2020, supported by strong retail spending and industrial activity as well as better-than-expected exports as the virus hit markets around the world. It marks the fastest pace since quarterly records began three decades ago, though the GDP figure of 18.3 per cent is slightly below forecasts in an AFP survey of economists. While the disease first emerged in central China in late 2019, the country was also the quickest to bounce back after authorities imposed strict control measures and consumers stayed home. "The national economy made a good start," National Bureau of Statistics spokeswoman Liu Aihua told reporters Friday. The sharp spike was partly due to "incomparable factors such as the low base figure of last year and increase of working days due to staff staying put during the Lunar New Year" holiday, said Liu. Migrant workers had been urged to remain in the areas where they work during the break owing to fears that the annual massive migration might lead to local outbreaks. But Liu added that quarter-on-quarter growth has "demonstrated a steady recovery". Across key sectors, China powered on in its economic rebound after caution around the holiday period subsided and domestic consumption soared. In March, the country's industrial output rose 14.1 per cent on-year, bringing first-quarter growth to 24.5 per cent, the official data showed. Retail sales surged 34.2 per cent, picking up from the first two months and bringing first-quarter growth to 33.9 per cent as life largely returned to normal. Liu, however, warned that the international landscape still contained "high uncertainties". The urban unemployment rate ticked down slightly to 5.3 per cent, a figure analysts are watching closely as China's consumption rebound lags behind that of its industrial sectors. "The recovery remains uneven, with private consumption lagging given rising unemployment," HSBC chief China economist Qu Hongbin said in a recent report. Retail outperformance But economists expect growth drivers could change in the months ahead. "Industrial production has been taking the lead in recovery last year, and it looks a bit tired now," said UOB economist Ho Woei Chen, referring to its slower-than-expected growth. "There is an expectation that with retail sales' outperformance and a recovering job market, that there is momentum picking up in private consumption," she told AFP, adding that this should take over the lead in growth later in the year. But Oxford Economics' head of Asia economics Louis Kuijs cautioned that "a full rebound in household spending hinges on convincing vaccination and further improvements in labour market conditions". Economists also added that China's post-coronavirus rebound is levelling off. Julian Evans-Pritchard, the senior China economist at Capital Economics, said: "We expect quarter-on-quarter growth to remain modest during the rest of this year as the recent boom in construction and exports unwinds, pulling activity back towards trend."

China GDP grows record 18.3% in first quarter in coronavirus rebound

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