Alt causes to pandemics

Causes of Disease Outbreaks Several factors contribute to the outbreak of infectious diseases. Contraction can occur as a result of transmission from people, animals, or even the environment. For example: Weather conditions.(link is external and opens in a new window) For example, whooping cough occurs in spring, whereas measles tend to appear in the winter season. Exposure to chemicals or radioactive materials.(link is external and opens in a new window) For example, Minamata is a disease contracted after exposure to mercury. The social aftermath of disasters(link is external and opens in a new window) such as storms, earthquakes, and droughts can lead to high disease transmission. A number of environmental factors(link is external and opens in a new window) such as water supply, food, air quality, and sanitation facilities can catalyze the spread of infectious diseases. Disease origins(link is external and opens in a new window) can also be unknown. These kinds of diseases could be caused by a variety of factors, including: A new or newly modified pathogen Natural toxins Undetected chemical releases Unknown ionizing radiation over-exposure The field of epidemiology works to trace these unidentified outbreaks to the source in an effort to protect public health and safety.