Coronavirus: China urges vigilance at home and tracks outbreaks abroad to prevent Covid-flu superstorm this winter
- Zhong Nanshan, China’s top respiratory expert, among experts warning of parallel risks as pandemic measures, reduced immunity and chill affect public health
- Influenza season has arrived earlier than usual in US and UK and countries around the world also face outbreaks of bird flu and RSV respiratory illness
Some local governments have called for extreme caution over both influenza and Covid-19.
Henan governor Wang Kai told a conference on Monday the province had to prepare in case of large outbreaks this winter and spring.
While holding fast to its zero-Covid restrictions, China is also keeping a watchful eye on spikes in coronavirus cases and other respiratory diseases elsewhere around the globe.
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There are worrying signs that influenza cases are rising in some countries. In the United States, the flu season arrived a month earlier than usual and it has already driven a significant jump in hospital admissions. America’s Centres for Disease Control and Prevention estimates there have been at least 880,000 illnesses recorded, nearly 7,000 hospital admissions and 360 deaths from the flu this season.
So far, there has not been a fresh surge in illness or mortality from Covid-19 in the US but scientists remain concerned as winter approaches.
Last month, Germany reinstated the mask mandate for some public transport amid a surge in cases, although case numbers have stabilised this week.
Britain also saw an early arrival of influenza season, although the Covid-19 infection level remains steady. However, an uptick in Britain and the US of the respiratory disease RSV among children has prompted worries among some experts about the possibility of a “tridemic”.
Former chief of the Chinese Centre for Disease Control and Prevention (CDC), George Gao Fu, told the World Flu Day symposium on Tuesday that the rise in influenza cases might be related to weakened immunity because of public health measures over the past three years.
And the relaxation of social distancing rules in many countries had furthered the rise of new influenza strains.
He also attributed the spread of influenza to low rates of vaccination against the flu.
Zhang Wenqing, director of the World Health Organization’s Global Influenza Programme, told the symposium there had been a surge in influenza cases in the southern hemisphere winter this year and it was important to look out for a high incidence during the northern hemisphere winter.
Australia recorded its worst influenza outbreak in years, with 252 deaths between January and July. But the pandemic remains far deadlier, with more than 6,600 Covid-19 deaths in the country over the same period.
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A higher number of influenza cases recorded in Australia may be attributed to better surveillance in the pandemic era.
Still, some experts are concerned it may be a harbinger for the northern hemisphere of parallel flu and Covid-19 outbreaks. As more people gather indoors during colder weather, the risk of respiratory diseases spreading rises.