Infection is the invasion of an organism's body tissues by disease-causing agents, their multiplication, and the reaction of host tissues to these organisms and the toxins they produce.Infectious disease, also known as transmissible disease or communicable disease, is illness resulting from an infection.
Fever, general feeling of illness, rash resembling water blister appearing after 3 to 4 days,Scabs appear later, watery eyes, sneezing, running nose.
Influenza is a viral infection that attacks your respiratory system — your nose, throat and lungs. Influenza, commonly called the flu.
Despite the high prevalence of infectious diseases and increasing movement of people across the borders, no surveillance system had been established to assess the border population as a geographic unit. Gaining an accurate picture of public health needs was limited by the following factors.