Two Toronto health networks forced to limit or close COVID-19 vaccine clinics due to shortages Toronto Bookmark Please log in to listen to this story. Also available in French and Mandarin. Log In Create Free Account Getting audio file ... This translation has been automatically generated and has not been verified for accuracy. Full Disclaimer Two health networks in Toronto say shortages of COVID-19 vaccine are forcing them to limit or close immunization clinics. Scarborough Health Network says it will be closing its Centennial College and Centenary hospital clinics today. University Health Network says it has had to pause registration for appointments for adults over 18 who qualify for vaccination based on their postal code.