TORONTO — An infant born prematurely and infected with measles has died in southwestern Ontario, Dr. Kieran Moore, Ontario's chief medical officer of health, said Thursday.

The baby was infected with the virus before birth from their mother, who was not vaccinated, he said.

"While measles may have been a contributing factor in both the premature birth and death, the infant also faced other serious medical complications unrelated to the virus," Moore said in a statement.

"Out of respect for the family’s privacy, no further personal or medical details will be shared," he said.

This is the first death reported in Ontario's measles outbreak, which began in October with a travel-related case in New Brunswick.

Dr. Ninh Tran, medical officer of health at Southwestern Public Health, said the

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