Infectious diseases are illnesses caused by pathogenic microorganisms such as bacteria, viruses, fungi, or parasites. These diseases can be transmitted from one individual to another, either directly or indirectly, and can also be spread through vectors like insects. Infectious diseases can lead to a range of health issues, from mild infections that may resolve without treatment to severe diseases that can be fatal or cause long-term health complications. The category of infectious diseases includes common illnesses like the flu, more serious conditions such as HIV/AIDS, tuberculosis, and COVID-19, as well as waterborne diseases like cholera. Control measures for infectious diseases often focus on prevention through vaccination, proper sanitation, and public health initiatives aimed at controlling outbreaks and promoting health education.
Two Indiana schools are switching to e-learning due to rising student absenteeism linked to respiratory illnesses. Over 20% of students and staff at these schools have been affected by flu,…