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.
Health Information Â» Communicable Disease Â» Dengue Fever, Zika & Chikungunya. Dengue, Zika, and chikungunya are all diseases caused from being bitten by infected Aedes mosquitoes, which are present in many tropical countries, Asia, and the Pacific. Dengue fever emerged as a worldwide problem in the 1950s, and is becoming more and more widespread.