COVID-19 vaccine.The new quarantine measures, which went into effect in late February, include additional PCR tests for those flying back once they arrive as well as up to three days of quarantine at a hotel — which could cost an ample $2,000 that travelers have to pay on their own dime. ‘They want to lock us into a hotel’: Snowbirds criticize new travel measures The reason for the restrictions — at least according to Health Canada and several immunology experts — is that while vaccines are effective at preventing severe illness in those who have contracted the disease, it still isn’t clear if getting a jab prevents a person from spreading the virus.Still, Canadians returning from popular snowbird locations such as Florida have expressed.