
The 1918 flu pandemic infected 500 million people worldwide and resulted in the deaths of 50 to 100 million people. While this is unusual for communicable diseases, it is always a possibility. How does something as small as a virus spread across such a vast region and infect...

The 1918 flu pandemic infected 500 million people worldwide and resulted in the deaths of 50 to 100 million people. While this is unusual for communicable diseases, it is always a possibility. How does something as small as a virus spread across such a vast region and infect...