Answer: Diseases can be spread ten ways that I know of:
1. Through the air,i.e.by people coughing, sneezing or breathing on you. This is called droplet infection since their breath contains tiny water droplets, containing the harmful microbe.e.g.the flu and influenza.
2. Eating contaminated food, such as chickeni.e.food poisoning.
3. Drinking contaminated water. For example, if sewage has gotten into your drinking water you could catch Salmonella andE-Coli.
4. During sexual intercourse diseases can be passed from one person to another,i.e.syphilis (bacterial); yeast; HPV (viral).
5. Through a cut. For example, if you punctured your foot by stepping on a rusty nail, you could catch Tetanus which is fatal if untreated.
6. From mother to baby through the placenta,i.e.Rubella.
7. Through blood. For example, drug addicts sharing needles could catch HIV. (Human Immunodeficiency virus) Although the USA blood donor supply is scrutinized through massivepre-testing,recipients of donor blood can contact hepatitis, HIV, etc.
8. By touching people.e.g.fungus or bacterial infections. Or by stepping barefoot in public shower areas, i.e. Athletes Foot which is caused by a fungus.
9. Animal bites can spread diseases. for example mosquitoes can carry malaria and dogs can carry rabies.
10. Depressed auto-immune systems or an existing condition which makes a person susceptible to many infections. For example, diabetes can lead to urinary infections and skin or vaginal yeast infections.
Answer: Communicable diseases are most often spread by microrganisms which are transferred from individual to individual by droplet contact (sneezing, kissing, etc.), sexual (bodily fluid) contact, foodborne contact, and water source contact. Sometimes skin to skin contact is sufficient, as well.
Answer: contagious diseases speared in many ways while anybody is eating the bacteria spread in air while coughing the bacteria enter in to air the bacteria goes to another person like these the contagious diseases spread
Answer: You cannot get tetanus directly from a mouse, but if a mouse has tetanus, and you get some of its fecal matter into a wound you have, then you could get tetanus. (below from wikipedia)
Tetanus is a medical condition characterized by a prolonged contraction of skeletal muscle fibers. The primary symptoms are caused by tetanospasmin, a neurotoxin produced by the Gram-positive, obligate anaerobic bacterium Clostridium tetani. Infection generally occurs through wound contamination and often involves a cut or deep puncture wound. As the infection progresses, muscle spasms develop in the jaw (thus the name "lockjaw") and elsewhere in the body. Infection can be prevented by proper immunization and by post-exposure prophylaxis.[2 Tetanus is often associated with rust, especially rusty nails, but this concept is somewhat misleading. Objects that accumulate rust are often found outdoors, or in places that harbor anaerobic bacteria, but the rust itself does not cause tetanus nor does it contain more C. tetani bacteria. The rough surface of rusty metal merely provides a prime habitat for a C. tetani endospore to reside, and the nail affords a means to puncture skin and deliver endospore into the wound. An endospore is a non-metabolizing survival structure that begins to metabolize and cause infection once in an adequate environment. Because C. tetani is an anaerobic bacterium, it and its endospores survive well in an environment that lacks oxygen. Hence, stepping on a nail (rusty or not) may result in a tetanus infection, as the low-oxygen (anaerobic) environment is provided by the same object which causes a puncture wound, delivering endospores to a suitable environment for growth.
Tetanus is an international health problem, as C. tetani spores are ubiquitous. The disease occurs almost exclusively in persons who are unvaccinated or inadequately immunized. Tetanus occurs worldwide but is more common in hot, damp climates with soil rich in organic matter. This is particularly true with manure-treated soils, as the spores are widely distributed in the intestines and feces of many non-human animals such as horses, sheep, cattle, dogs, cats, rats, guinea pigs, and chickens. Spores can be introduced into the body through puncture wounds. In agricultural areas, a significant number of human adults may harbor the organism. The spores can also be found on skin surfaces and in contaminated heroin. Heroin users, particularly those that inject the drug, appear to be at high risk for tetanus.
Tetanus is the only vaccine-preventable disease that is infectious but is not contagious.