Step up bird flu tests on chickens, Hong Kong health expert urges
With rising risk of infection, health centre urges more checks on local poultry farms
The Hong Kong government 's Centre for Health Protection yesterday recommended that tests for H7N9 bird flu on locally raised chickens be stepped up, with its experts seeing a rising risk of human infection.
Blood tests for H5 bird flu are conducted on locally raised chickens and if the results are positive, a rapid test for H7 on the samples is conducted. Results for a rapid test are ready in four to five hours. But the blood samples are taken 10 days before the poultry go to the market, so there are concerns that any infection that develops in those 10 days may not be found.
A rapid test is performed on chickens imported from the mainland regardless of the blood test results, and experts from the centre concluded after a meeting yesterday that this practice should be extended to local poultry.
"This has to be considered, as the risk is now increasing," said University of Hong Kong microbiologist Yuen Kwok-yung, chairman of the centre's scientific committee on emerging and zoonotic diseases - those that can be transmitted from animals to humans.
This came as a 58-year-old porter became the third patient in Fujian to be diagnosed with the H7N9 virus yesterday.
The man, from Cangshan district in Fuzhou , was admitted to the Fujian Provincial Hospital on Sunday after suffering a persistent fever five days earlier. He tested positive for the virus yesterday and is in serious condition.
The case takes the number of cases of H7N9 across the nation to 127; 24 patients have died. The disease has so far been confined to the mainland.