But if you only have a slight astigmatism -- your doctor may refer to it as a degree -- and you donât have another vision problem, you may not need them. Irregular astigmatism is far less common and is linked to problems with your cornea, the front part of the eye.
Malaria is one of the most infectious diseases in history. It has infected countless people across the globe and it still kills millions every year. The malaria parasite lives in the gut of the Anopheles mosquito and is transmitted through the bug's bite.
2016-02-03T10:56:22-05:00. A communicable disease is a disease that can be passed from person to person. It can also occur from an animal to a person or vice versa. Airborne viruses, bacteria, blood, and bodily fluids can cause the spread of these diseases. When things are infectious or contagious it also refers to communicable diseases. The most common communicable disease is the flu, which can easily spread in an enclosed environment with a recycled circulating air (e.g. air-conditioning). Infectious disease caused by blood contact like HIV/AIDs are also dominant in society.