Answer:
Bird flu, also known as avian influenza, is a virus that primarily affects birds. Although the virus can infect humans, the transmission of the virus from birds to humans is rare.
Step-by-step explanation:
Here are some ways bird flu can spread in the world:
- The virus can spread from one bird to another, leading to outbreaks in poultry farms.
- Wild birds can carry the virus and spread it over long distances, infecting other birds that come into contact with contaminated water or soil.
- The virus can also be spread through the international trade of poultry and poultry products, where infected birds or contaminated products can be transported across borders.
- As avian influenza virus can survive for long periods in water and soil, and contaminated surfaces can also spread the virus.