A disease that becomes unusually widespread and even global in its reach is referred to as?

Question: A disease that becomes unusually widespread and even global in its reach is referred to as?

The risk of spreading infection diseases is highest because it spreads very quickly from one person to another, similarly the disease is going on recently, which spreads quickly from one person to another, so the government has imposed a lockdown like this. Diseases spread very quickly on a global scale. People with immunity can also become infected with this Infectious disease spreads more when conditions are favorable for its spread, such as humidity and temperature are favorable conditions for the spread of a fungus. These diseases spread a lot during summer.