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The CDC issued an alert for healthcare workers after a rise in measles outbreaks. (image via Getty Images)

The CDC issued an alert for healthcare workers after a rise in measles outbreaks. (image via Getty Images)

Healthcare workers in the United States have been notified by the Centers for Disease Control and Prevention (CDC) to be on alert for measles cases.

According to a Jan. 25 newsletter from the CDC, between Dec. 1, 2023 and Jan 23, 2024, there have been 23 cases of measles reported. Seven cases were imported from international travellers and two outbreaks with more than five infections each.

“Most of these cases were among children and adolescents who had not received a measles-containing vaccine (MMR or MMRV), even if age eligible,” the newsletter said.

The CDC urged healthcare workers to be on the lookout for measles symptoms including febrile rash illness and patients who have recently traveled abroad to countries with an ongoing measles outbreak.

“Measles cases often originate from unvaccinated or undervaccinated U.S. residents who travel internationally and then transmit the disease to people who are not vaccinated against measles,” the CDC said. “The increased number of measles importations seen in recent weeks is reflective of a rise in global measles cases and a growing global threat from the disease.”

The CDC’s newsletter comes just months after the World Health Organization (WHO) reported a global increase in measles cases and fatalities.

With the latest outbreak just south of the border, should Canadians be worried about measles?


What is measles?

According to the CDC, measles is a “highly contagious” airborne viral infection transmitted by talking, sneezing or coughing with symptoms that may include:

There is no treatment for measles; vaccination is the best way to protect yourself from contracting the virus.

Measles rash on the abdomen. (Image via Getty Images)

A measles rash occurs approximately three days after infection. (Image via Getty Images)

 


Complications from measles

It takes most people two to three weeks to recover from measles, however there are host of complications that range in severity that can occur.

Common symptoms of measles can include ear infection, pneumonia and diarrhea. More severe complications of measles can include developing encephalitis (inflammation of the brain), which can have long term effects such as vision and hearing loss and speech and memory issues.

Measles can also cause respiratory failure and death.

“Measles has a knack to inhibit the immune system and wipe out prior immunity…”Dr. Isaac Bogoch

Dr. Isaac Bogoch, an infectious disease specialist with the University of Toronto, says there are common misconceptions about measles that prevent people from understanding how “dangerous” the infection can be.

Canada reported 12 cases of measles in 2023. (Image via Getty Images)

Canada reported 12 cases of measles in 2023. (Image via Getty Images)

“Measles has a knack to inhibit the immune system and wipe out prior immunity to other vaccines that you might have had,” Bogoch tells Yahoo Canada. “That’s why it’s such a terrible infection. People might have some of their regular childhood vaccines. But measles can actually cause an immunosuppression of sorts and make people more prone to infections that they might have even been vaccinated to in the past. So it’s, it’s a really nasty infection.”


Should Canadians be worried about measles?

Health Canada reported there were a total of 12 measles cases in 2023. Bogoch says Canada’s high immunization rate helps protect Canada from measles outbreaks, and many of the cases that do occur are imported from other countries.

“It’s the most contagious infection on the planet. It’s so transmissible,” he says. “It will find a way it will find a find unvaccinated individuals.”

Measles is a highly contagious virus that has no treatment. (Image via Getty Images)

Measles is a highly contagious virus that has no treatment. (Image via Getty Images)

In Canada, the current recommendation is a two dose MMR vaccine. The first dose is administered when babies are between 12-15 months old with a second dose given at approximately 18 months of age or before children enter daycare or school.

“There is no reason to have a case of measles transmitted within the country.”Dr. Isaac Bogoch

Bogoch says that people born before the mid-’90s may need to check their immunization records. Although the two dose vaccine is now the standard in Canada, the second dose was introduced in 1996. While there were nation-wide campaigns to administer a second dose, many Canadians may not know that they’re not fully vaccinated against measles.

Checking your vaccination card or asking your healthcare professional can help ensure you’re up to date on your vaccines. If you’re not sure, Bogoch says a simple blood test can help determine if you’re immune or not.

“There is no reason to have a case of measles transmitted within the country,” Bogoch says. “There’s no reason to have this. We can’t control what happens outside of Canada, so we’ll see imported cases from time to time. But there is no reason we should have cases transmitted within the country.”

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