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Bird flu viruses could re-emerge in upcoming flu season
International experts recommend vigilance and promote targeted surveillance, market restructuring to fight H7N9, H5N1 and other threats
FAO has issued a new warning to the international community that the H7N9 and H5N1 avian influenza viruses continue to pose serious threats to human and animal health, especially in view of the upcoming flu season.
“The world is more prepared than ever before to respond to bird flu viruses in light of a decade of work on H5N1 and the recent response to H7N9,” said FAO Chief Veterinary Officer Juan Lubroth at a joint meeting with United States Agency for International Development (USAID), the World Health Organization (WHO) and the World Organisation for Animal Health (OIE).
Heads of FAO Reference Centres, in Australia, the People’s Republic of China, Italy and the United States of America were also in attendance, along with representatives from the Centers for Disease Control and Prevention and the United States Department of Agriculture.
“However, constant vigilance is required,” Lubroth said. “Bird flu viruses continue to circulate in poultry. Efforts must continue and be strengthened, not only in affected countries, but also in neighbouring states and areas with strong trade linkages. This is especially true for H7N9 since it causes no clinical signs in birds and is therefore very difficult to detect in poultry.”
Along these lines, FAO has committed $2 million of emergency funding supplemented by over $5 million from USAID to kick-start H7N9 response efforts. USAID support has enabled FAO to help countries at risk dramatically improve surveillance capacities.
“Several at-risk countries previously unable to pick up the virus can now accurately detect H7N9,” explained Lubroth. “Identifying the virus with consistency is critical to targeting control efforts and reducing spread.”
Dennis Carroll, Director of USAID’s Emerging Threats Program, added, “The early detection and excellent characterization of the H7N9 virus by Chinese experts has created an unprecedented opportunity to mount a coordinated effort to stop the further spread of the virus – and thwart a possible global event.
Significant progress over the past decade in forging national and international partnerships and validating interventions for control of avian influenza can be immediately adapted to addressing the threat posed by the H7N9 virus.”
Surveillance is key
FAO and USAID stress that more work is required. In the short term this includes continued, targeted surveillance and trace back throughout the production and marketing system, contingency planning and compensation scheme development.
“The emergence of the H7N9 virus serves as yet another reminder that new disease threats are not the exception, but a predictable consequence of events occurring at the human-animal interface,” said Carroll.
“It is important we continue to monitor future threats while at the same time improving the practices and behaviours associated with livestock production and marketing that can make it easier for diseases to emerge and affect animals and people,” he said.
“Surveillance is key, and with support from key partners like USAID, we’re making progress,” said Lubroth. “In addition to helping countries detect the virus, we need to make sure authorities can trace back the virus to its points of origin and better understand how the virus is circulating so as to design effective control actions. Where appropriate we need to help governments put together contingency plans for the possible detection of the virus and compensation schemes for assisting those affected by control efforts.”
In the longer-term fight against H7N9 and other viruses, FAO and USAID are urging countries to invest in improving the way they market and sell poultry.
“We need keep our eyes on the bigger picture of promoting healthy food systems, especially when it comes to animal production and marketing,” said Lubroth. “Restructuring can create healthier, safer markets by developing facilities that employ proper food safety and hygiene measures. Since animals, and therefore viruses, are inevitably gathered at markets, keeping these markets clean and safe reduces the chances for viruses and other pathogens to spread. Healthy markets mean healthy birds, and that means improved public health, better food security and more sustainable livelihoods.”
FAO continues its call for funds to bolster the global H7N9 response. FAO is urging countries to make key investments in improving markets and promoting healthy food systems to fight viruses affecting animals and humans as part of overarching efforts to ensure the animal sector realizes its potential in the promotion of healthy and productive lives.