Why is measles spreading in Canada, Mexico and the US? | Health News [Video]

The United States and Canada are experiencing one of their worst measles outbreaks in years, while the virus has also crossed to neighbouring Mexico.

A total of 2,500 cases and four deaths have been reported in the outbreaks across the three countries. Vaccine hesitancy has been blamed.

Here is what we know about the outbreaks so far and why measles cases are on the rise.

Measles is a highly contagious viral illness that starts with symptoms including high fever, cough, runny nose, red or watery eyes, and sensitivity to light. A few days after infection, a red, blotchy rash typically appears on the face and spreads down the body. Fatigue and loss of appetite are also common.

Most people recover within two to three weeks but complications, particularly in young children and those with weakened immune systems, can be serious.

These include ear infections, diarrhoea, pneumonia and brain swelling (encephalitis) which can lead to permanent disability or …