Which two infectious diseases are caused by spirochetes?
spirochete, (order Spirochaetales), also spelled spirochaete, any of a group of spiral-shaped bacteria, some of which are serious pathogens for humans, causing diseases such as syphilis, yaws, Lyme disease, and relapsing fever. Examples of genera of spirochetes include Spirochaeta, Treponema, Borrelia, and Leptospira.
Can a mosquito transmit Lyme disease?
There is no credible evidence that Lyme disease can be transmitted through air, food, water, or from the bites of mosquitoes, flies, fleas, or lice.
Which disease is caused by Mycobacterium?
This genus includes pathogens known to cause serious diseases in mammals, including tuberculosis (Mycobacterium tuberculosis) and leprosy (Mycobacterium leprae) in humans.
What are dental spirochetes?
Spirochetes contain enzymes or substances that directly damage to tissue. Oral spirochetes in periodontal diseases release toxic substances and enzymes that are important in development of periodontitis. These products damage to tissue by activating immune responses [71].
What kingdom are spirochetes?
Spirochetes are classified as bacteria in the order Spirochaetales and contain two families—the Spirochaetaceae and the Leptospiraceae. The Spirochaetaceae family includes four genera: Spirochaeta, Cristispira, Treponema, and Borrelia.
Which of the following pathogen causes tuberculosis?
Tuberculosis (TB) is caused by a bacterium called Mycobacterium tuberculosis. The bacteria usually attack the lungs, but TB bacteria can attack any part of the body such as the kidney, spine, and brain.
What are seed ticks?
A seed tick is a tick that is in the larval stage of its life. Ticks are tiny parasites that survive by drinking the blood of humans and other animals. The larval stage occurs just after the tick hatches from an egg, but before it finds its first blood meal.
Are spirochetes bacteria?
Introduction. Spirochetes are a group of six genera of spiral-shaped, slender bacteria of varying length. They are either free-living or host-associated. They are found in the human oral cavity, gastrointestinal tracts of humans, mammals, insects, and in marine environments.
Is a common disease caused by a Mycobacterium?
Mycobacteria are a type of germ. There are many different kinds. The most common one causes tuberculosis. Another one causes leprosy.
What diseases can be spread by mosquitos?
Mosquito-borne diseases are those spread by the bite of an infected mosquito. Diseases that are spread to people by mosquitoes include Zika virus, West Nile virus, Chikungunya virus, dengue, and malaria. Employers should protect workers and workers should protect themselves from diseases spread by mosquitoes.
Can a severe case of mosquito borne disease cause death?
Severe cases of mosquito-borne diseases can cause death. Workers are at risk when they are working where mosquitoes are biting. Different species of mosquitoes are found in varying geographic locations, are most active at different times, and spread different diseases.
What kind of diseases does the Aedes mosquito carry?
The Aedes mosquitoes are the carriers of many viral diseases including Zika, dengue, chikungunya, yellow fever, and Rift Valley disease. The Aedes mosquitoes can be identified by the distinctive black and white markings on their bodies and legs.
Which is the most common mosquito borne disease?
Dengue, transmitted predominantly by Aedes aegypti mosquitoes, is found in more than 100 countries. Dengue is the most common vector-borne viral disease in the world, causing an estimated 50 to 100 million infections globally each year and 25,000 deaths.