Vaccine patch to minimise discomfort

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Despite the painful jab, a vaccination by needle and syringe injection is still a powerful weapon in fighting deadly infectious-disease outbreaks. This method has been in use for more than a century, but a kinder, gentler application is in the offing. Scientists have invented a new microneedle patch, which promises a pain-free vaccination.

The patch is just 5mm by 5mm, about 1/10 the size of a 10-cent coin, but it contains 3,000 microneedles. When the patch touches the skin, those tiny needles inject the vaccine which will dissolve into the body within a minute. Although the vaccine amount is minuscule, it is enough to invoke the plentiful immune cells in our skin to elicit their protective responses

Hong Kong’s Information Services Department

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