Most diseases are infectious, infectious Diseases are diseases that can be spread from person to person they can be caused by either bacteria, fungi virus or protozoan an and are spread I four main ways.
Fungal diseases such as ringworm and sexually transmitted diseases such as syphilis are spread by direct contact.
Airborne and droplets infections
When you sneeze a fine spray of mucus droplets containing microorganisms leaves your nose and enter the air and someone else can breathe in this fine droplets and could catch up a disease. Covering your mouth while sneezing help to control this.
Ingestion in water or on food
Many parasites leave the human body in faeces or urine . Careful disposal of sewage so that it does not contaminate drinking water is essential. Hands should always be washed after going to the lavatory. Some example include cholera , amoebic dysentery and roundworms.
Entry through the skin
Parasites such as schistosoma produce free swimming larvae which can bore through the human skin. Other parasites are injected through the skin by insects vector with biting mouth part feeding on human body for example malaria caused by the protozoan Plasmodium is injected by the female anopheles mosquito when she feeds.
Content created and supplied by: VincentBlameless (via Opera News )
Opera News is a free to use platform and the views and opinions expressed herein are solely those of the author and do not represent, reflect or express the views of Opera News. Any/all written content and images displayed are provided by the blogger/author, appear herein as submitted by the blogger/author and are unedited by Opera News. Opera News does not consent to nor does it condone the posting of any content that violates the rights (including the copyrights) of any third party, nor content that may malign, inter alia, any religion, ethnic group, organization, gender, company, or individual. Opera News furthermore does not condone the use of our platform for the purposes encouraging/endorsing hate speech, violation of human rights and/or utterances of a defamatory nature. If the content contained herein violates any of your rights, including those of copyright, and/or violates any the above mentioned factors, you are requested to immediately notify us using via the following email address operanews-external(at)opera.com and/or report the article using the available reporting functionality built into our Platform See More