Diseases Spread From Person To Person. An infection occurs when germs enter the body, increase in number, and cause a reaction of the body. Infectious diseases can be caused by many pathogens, including bacteria, viruses, fungi, and parasites that may cause illness and disease.
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They are of long duration and generally slow progression. Pathogens such as viruses, bacteria, and fungi cause these diseases. A disease resulting from the presence and activity of a pathogenic microbial agent.
Spread Of The Avian Flu. The disease is transmitted via contact with an infected bird's feces, or secretions from its nose, mouth or eyes. The global spread of hpai subtype h5n8 has been driven in large part by migratory waterfowl.
World: Areas Reporting Confirmed Occurence Of H5N1 Avian Influenza In Poultry And Wild Birds Since 2003 (As Of 03 Mar 2008) - World | Reliefweb from reliefweb.int
Avian influenza normally spreads in birds but can also infect humans. H5n1 bird flu virus in u.s. These viruses naturally spread among wild aquatic birds worldwide and can infect domestic poultry and other bird and animal species.
