COVID-19, Ebola, bird flu: What to know about zoonotic diseases

COVID-19 and H5N1 bird flu are both zoonotic, meaning they jumped from animals to humans. How did that happen and how can they infect humans?

COVID-19, Ebola, bird flu: What to know about zoonotic diseases
COVID-19 and H5N1 bird flu are both zoonotic, meaning they jumped from animals to humans. How did that happen and how can they infect humans?