Post-Covid surge
The surge in hospital visits coincides with China’s first full winter without its “zero-Covid” controls, which saw people maintain strict social distancing and wear face masks.
The controls were abruptly relaxed last December after rare protests erupted against pandemic measures which included strict lockdowns.
It’s unclear if there’s been an increase in respiratory illnesses or severe cases among children relative to pre-pandemic years because of limited public data released by China.
“During zero-Covid, these (common respiratory) diseases would be under-estimated (as people avoided hospitals), and because everyone was practicing some social distancing the incidence was low,” said Jin, the virologist at Hong Kong University.
“It’s absolutely normal that this year compared to last year would be a big increase. But whether it’s a big surge compared to 2018, 2019, that’s still to be determined.” he said.
Social factors could be at play in the current situation, Jin added, as parents may also be more concerned about their child’s health following the pandemic, prompting more to seek medical help.
More attention is being paid to disease outbreaks following the emergence of the pandemic coronavirus in late 2019. There are also calls for more transparency – including from China, which has been accused of hindering investigation in the origins of the virus and obscuring early information about its spread.
Christine Jenkins, a professor of respiratory medicine at UNSW Sydney, said a rise in viral respiratory tract infections in children at this time of year is not unexpected and is a phenomenon that has been observed over many decades worldwide at the onset of winter.
“However, in the context of the pandemic due to a relatively new virus such as (the novel coronavirus) and the potential for other new viruses or mutations to cause respiratory tract illness, prompt reporting and monitoring are essential,” she said.