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What you need to know about this year’s unusual winter flu surge in Hong Kong

Numerous school cases have sparked early closure ahead of the Lunar New year holiday, while experts warn of another outbreak on the horizon

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In a rare move, the Lunar New Year holiday for schoolchildren has been brought forward to stem the spread of flu. Photo: K. Y. Cheng

Another year, another flu season. But how different is this one? Since the start of the year, more than 120 people, including two children, have died from serious flu complications in an unusually intense seasonal outbreak that is expected to last a few more months.

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Between January 7 and Tuesday, 398 outbreaks of flu were registered across the city, mainly at kindergartens and primary schools. Some 203 adults and 12 children developed severe complications after becoming infected. 

Flu outbreaks are common every year in the winter and summer, and in Hong Kong’s case, between January and March, and from July to August. Here’s what you need to know.

What is the flu? 

Seasonal influenza, better known as the flu and not the same as the common cold, is a contagious respiratory illness caused by flu viruses. Common symptoms include fever, chills, cough, sore throat, runny nose, headaches and fatigue.

Most healthy adults recover within two weeks, but high-risk groups, especially children, the elderly and those with chronic illnesses can develop complications such as infections of the upper or lower respiratory tracts or pneumonia. In the worst cases, it can result in death. 

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Influenza warnings at Queen Elizabeth Hospital in Yau Ma Tei. Photo: Sam Tsang
Influenza warnings at Queen Elizabeth Hospital in Yau Ma Tei. Photo: Sam Tsang
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