Toronto Public Health has confirmed two new cases of mumps at Ryerson University, the latest in an outbreak of the expanding infection in the city.

“We have had several post-secondary cases of the mumps in Toronto this year,” public health spokeswoman Lenore Bromley says.

Forty-eight cases of the infection have been confirmed in Toronto as of Monday, including at least four Toronto District School Board student cases.

Officials said the virus is found in saliva and can be spread through coughing, sneezing and kissing, as well through sharing drinks, utensils or food.

Public health staff say crowed environments are a major factor contributing to the outbreak.

“The mumps infection causes fever swelling of one or more salivary glands, loss of appetite, tiredness, and headache,” a public health statement advises. “If you or your child have symptoms of the mumps and are ill, please contact your health care provider and do not attend work or school.”

The public are check their vaccination records. People born in 1970 or later should have two doses of the vaccine.

“We have sent letters to all local colleges and universities to let people know about the mumps and encourage vaccinations.”