People do not get the medicine they need.And in some cases counterfeits cause death.Twenty children in Bangladesh died last year after being given acetaminophen(对乙酰氨基酚).The medications contained ingredients that looked,smelled and tasted like the real thing.The medicine was produced by a local drug company that used a dangerous substitute to save money.

　　The problem of counterfeit medicines is especially serious in Africa,Asia and Latin America.The WHO estimates that up to thirty percent of medicines on sale in many of those countries are counterfeit.The problem is less widespread among industrialized countries.The WHO says counterfeits make up less than one percent of the illegal drug market in countries like the United States,Canada,Japan,and New Zealand.

　　But the agency also says as much as fifty percent of the medicine sold on the Internet is counterfeit.

　　Much is being done to fight counterfeit drugs.Several companies are developing ways to make counterfeits easier to identify.And there are existing methods,like a machine that can quickly identify chemicals in pills to confirm if the pills are real.Other ideas include things like special tracking codes for drug packages.People could send a text message with the code and get a message back,which proves that what they bought is listed in a database.Some drug makers and other companies put three-dimensional images called holograms(全息图)on their products as a security device.

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