Yep, you can get the flu from a bird, reptile and other mammals. The H1N1 pandemic that started in 1918 came from infected pigs. Everyone thinks that's all it did, but the H1N1 virus reached epidemic status in 1977 in the Soviet Union, and there was a fortunately short pandemic in 2009. They find local infections more often. What that means is that it's still with us somewhere.This would be entertaining. Locking down the entire world for two weeks all colds are gone, everyone celebrates the triumphant group effort over the common cold. Then two months later someone sneezes and once again the flu is among us once again. Not that they were the originator of the flu or some harbor of the flu strains but simply the unfortunate sap who got it from a bird.
But even still we have cases like this where not only was everyone vaccinated but they all had to test negative prior to boarding.
A Princess Cruises ship arrived in California Sunday with multiple passengers and crew members aboard who tested positive for COVID-19.abcnews.go.com