The new "essential medicines list" includes 39 antibiotics for 21 common syndromes, categorized into three groups: "Access", "Watch" and "Reserve."
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The "Watch" list includes ciprofloxacin, which is commonly prescribed for cystitis and upper respiratory tract infections (such bacterial sinusitis). But it is "not that effective," WHO Assistant Director-General for Health Systems and Innovation Marie-Paule Kieny told reporters.
'What we need to do is stop paying for antibiotics based on how many times they are prescribed, to discourage use.'
- Suzanne Hill
"We think that the political will is there but this needs to be followed by strong policies," Kieny said.
"What we need to do is stop paying for antibiotics based on how many times they are prescribed, to discourage use. We don't want colistin used very frequently. In fact we don't want it used at all," Hill said.
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The WHO classification takes into account the use of antibiotics for animal health use, and was developed together with the U.N. Food and Agriculture Organisation and the World Organisation for Animal Health.
Other changes to the list included the addition of two oral cancer treatments, a new pill for hepatitis C that combines two medicines, a more effective treatment for HIV, and new pediatric formulations of medicines for tuberculosis.
But the WHO also said Roche's well-known flu drug oseltamivir may be removed from the list unless new information supports its use in seasonal and pandemic influenza outbreaks.
"There is an updated data set compared to when the committee evaluated this product last, and what that suggests is that the size of the effect of oseltamivir in the context of pandemic influenza is less than previously thought," Hill said.