Thananya Saksuriyongse

Although reports of opioid abuse started to become widespread in 2014 and this crisis was declared a public health emergency in October 2017, the "opioid epidemic" actually dates back to the 1990s.

Heart disease and cancer are the first and second leading causes of death today in the United States (and most of developed countries), thanks to continuous improvements in infectious disease mortality since late 1930s.

As science and technology improve, we should expect life expectancy to logically follow suit—so why has life expectancy dropped in the U.S.?

Although Lassa fever is endemic to Nigeria, a recent outbreak of the disease there is the worst to date for the country, according to the Nigeria Centre for Disease Control (NCDC).

Influenza is a highly contagious, viral respiratory infection commonly transmitted through coughing, sneezing, or shaking hands. Vaccination is the most effective way to protect everyone from infection.