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.
Two of the most commonly used words in classifying disease are contagious disease and infectious disease. Let us differentiate one word from the other. Infectious disease is said to be the mother word of the terms such as contagious disease, communicable disease, and transmissible disease. Generally, infectious diseases are defined as the ability of a disease to enter a host, transmit the disease, and infect that person. An infectious disease can be sub-classified as contagious or non-contagious.