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.
Anderson received her associate degree in nursing from Lincoln University in Jefferson City, Mo. Top 10 Most Communicable Diseases Photo Credit Jupiterimages/Goodshoot/Getty Images. Communicable diseases are caused by pathogens passed from one human to another. Pathogens are viral, bacterial, parasitic and fungal. Methods of transmission include mucus, blood, breath, saliva and sexual contact.