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A spike in measles cases has sparked new fears among medical experts that the measles vaccine may no longer be working.
A joint investigation from the Victorian Health Department and several Melbourne hospitals has found 13 Victorians contracted the disease in recent years despite already being vaccinated.
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It's raised concerns the virus has evolved.
Measles - Disease - Deaths - Children
Measles is a highly infectious viral disease, with an estimated 110,000 deaths worldwide in 2017, mostly in children under five.
The first symptoms are fever, tiredness, cough, runny nose, sore red eyes and feeling unwell.
Days - Rash
A few days later a rash appears.
There have been 92 confirmed cases of measles in Australia so far in 2019.
US - Health - Authorities - Outbreak
In the US, health authorities are grappling with an outbreak.
Thirty-three new measles cases were recorded in the US last week, most of them in New York, federal health officials said on Monday.
Cases - Number - Cases - Year - US
The new cases brought the number of confirmed cases this year to 1,077, the worst US outbreak of the virus since 1992.
Research - Department - Health - Doherty - Institute
Research by the Department of Health, the Doherty Institute and Royal Melbourne Hospital shows that, between 2014 and 2017, 13 Australians who had been vaccinated still contracted the virus.
Medical experts suggest a third vaccination may be necessary to keep people immune.
Royal - Melbourne - Hospital - Dr - Katherine
The Royal Melbourne Hospital’s Dr Katherine Gibney is...
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