Before, travellers needed to have a molecular test, such as a PCR test, taken within 72 hours before their scheduled flight or arrival at the border. All travelers to Canada age five and older still need a COVID-19 test before crossing the border. The new measures allow for incoming travellers to provide an antigen test result taken within one day before their scheduled flight or arrival at the land border. The test cannot be taken at home, it must be done by a laboratory, healthcare entity, or telehealth service, and be authorized by the country in which it was purchased. PCR tests are still accepted. No rules have changed for pre-arrival PCR tests.