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.
Communicable diseases are diseases that can pass from person to  person or from an animal to a human. Some of the most communicable  diseases are AIDS, measles, chickenpox, â¦ hepatitis and influenza. The Beauty of Italy on Paper Known throughout the world for its deep cultural heritage, amazing history and beautiful sites, Italy has made countless contributions to different cultures around the world.â¦. 2  The Most Common Childhood Diseases Everyone wants to make sure that their child is as healthy as possible.