Human-to-animal spread of H7N9 virus ruled out

Human-to-animal spread of H7N9 virus ruled out

THE U.N. Food & Agriculture Organization (FAO) said Feb. 19 there is no evidence that human patients infected with influenza A/H7N9, a low-pathogenic virus in poultry, can transmit the virus to animals, including birds.

FAO referred to the first human case of A/H7N9 outside China, which was recently detected in Malaysia.

The patient, originally from Guangdong province in China, where she is thought to have contracted the infection, was visiting Malaysia as a tourist and has now been hospitalized there. Guangdong is one of the Chinese provinces most affected by the A/H7N9 virus so far in 2014.

"This case does not come as a surprise and should not be a cause for increased concern but should remind the world to remain vigilant," FAO chief veterinary officer Juan Lubroth said.

"Humans that become ill with influenza A/H7N9 constitute no threat to poultry populations," Lubroth emphasized. "In fact, we have no evidence that affected people could transmit the virus to other species, including birds. The highest risk of virus introduction is uncontrolled live poultry trade between affected and unaffected areas."

People, on the other hand, become infected following close contact with infected live poultry, mostly in live bird markets or when slaughtering birds at home.

World Health Organization risk assessments show that should infected people from affected areas travel internationally, community-level spread is unlikely since the virus does not have the ability to transmit easily among humans.

Lubroth added that, to date, the virus has not been found in poultry populations outside affected areas in China.

With the strong support of the U.S. Agency for International Development, FAO noted that it is assisting a number of member countries to prepare for a potential introduction of A/H7N9 into their poultry populations, focusing, in particular, on high-risk countries by facilitating risk assessment, contingency planning, expansion of diagnostic capabilities and risk-based surveillance.

Volume:86 Issue:08

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