In new guidelines released today the UN health agency "detailed recommendations highlighting the value of safety features for syringes, including devices that protect health workers against accidental... Injury."
Dangerous injection practices led to the accidental infection worldwide of 1.7 million people with hepatitis B, 315,000 with hepatitis C and as many as 33,800 with HIV in 2010, according to a 2014 WHO-sponsored study.
The new "smart" syringes recommended by the WHO include features that prevent them from being used a second time. Some have a plunger that breaks if someone tries to pull it back out following an injection.
"Adoption of safety-engineered syringes is absolutely critical to protecting people worldwide from becoming infected with HIV, hepatitis and other diseases," said Gottfried Hirnschall, head of WHO's HIV/AIDS Department.
Also Read
"This should be an urgent priority for all countries," he added.
However, these types of needles cost at least twice the three to four US cents the regular ones cost when ordered through a UN agency.
Accidental infections are a global phenomenon. A 2007 hepatitis C outbreak in the American state of Nevada was traced back to a doctor re-using a syringe.
Cutting down on the number of injections would also help reduce disease, WHO said. Of the 16 billion injections each year only 10 percent are for immunisations, injected birth control and procedures like blood transfusions.
The remaining 90 percent are used to administer medicine and in many cases the WHO says these injections are unnecessary. It appears excess injections are due to patients' beliefs that injections are the best form of treatment, but there also seems to be an economic reason.