EU Citizens Visiting Influenza A(H7N9)-Affected Areas in China at Risk of Infection

by Dr. Trupti Shirole on  January 31, 2017 at 6:41 AM Research News
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Influenza A(H7N9) virus continues to be detected in poultry in China. A steep increase of human cases of avian influenza A(H7N9) has been reported since the beginning of December 2016. During this wave, the number of human cases is already higher than during the last two waves in 2014-15 and 2015-16.
 EU Citizens Visiting Influenza A(H7N9)-Affected Areas in China at Risk of Infection
EU Citizens Visiting Influenza A(H7N9)-Affected Areas in China at Risk of Infection

The majority of recently reported human cases are associated with exposure to infected live poultry or contaminated environments, including markets where live poultry are sold. The human cases are more geographically widespread and cases are also reported from rural areas, unlike in previous epidemics.

At present, the most immediate threat to European Union (EU) citizens is to those living or visiting influenza A(H7N9)-affected areas in China concludes the updated rapid risk assessment by the European Center for Disease Control (ECDC). Caution should be taken by people traveling to China to avoid direct exposure to poultry, live poultry markets or backyard farms.

The recent upsurge of human cases indicates the possibility of imported cases to Europe. However, the risk of the disease spreading within Europe between humans remains low as the virus does not appear to transmit easily from human to human: investigations do not support sustained human-to-human transmission.

Travelers that visited affected areas and develop respiratory symptoms and fever within up to 10 days after their return should consult a physician and inform him/her about their recent travel history to facilitate early diagnosis and treatment.

People in the EU presenting with severe respiratory or influenza-like infection and a history of travel to the affected areas in China - with potential exposure to poultry or live bird markets - will require careful investigation, management and infection control.

Adequate samples for influenza tests should be rapidly taken and processed from patients with relevant exposure history within 10 days preceding symptom onset. Early or presumptive treatment with neuraminidase inhibitors should be considered for suspect or confirmed cases, in line with relevant national and international recommendations. Contacts of confirmed cases should be followed-up and tested. Offering post-exposure prophylaxis should be considered.

Source: Eurekalert

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