Diseases Due To Fleas Lice

Pediculus humanus humannus parasites in the body covered by clothing. Fleas have bodies that flatten on either side, without wings, the third pair of legs develop adaptive to jumping
1. CHI
There are two different species in parasitic size and position.
Head lice Pediculus humanus capitis is 2.7 to 3

.3mm long, parasitic on the head and hair.
Pediculus humanus humannus (or Pediculus humanus corporis) parasites in the body covered by clothing.
Biological
Chi has an incomplete metamorphosis development cycle Eggs are laid on hair or clothing folds The larvae, only males and females, suck blood. Temperature is an important factor for parasitic lice on the human body.



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Photos of mature Chi
Because lice do not have a large volume of distance away from the host body, the lice spread is mainly due to the proximity of people to each other such as sharing a bed, sharing combs, hats, sharing clothes, covering blankets. cold often develops body lice and hot climates develop head lice.
Roles cause disease
Lice disease: causes itching in the head area caused by head lice; itching on shoulders, armpits, back, waist due to body lice. Lesions may interfere with secondary infection and evaporation.
Role of disease transmission
Transmission of Rickettsia prowazeki causes typhus
Transmission of Rochalimaea Quintana (Rickettsia Quintana) causes trench fever
Borrelia recurretis infusion causes regression fever.
2. SCAN
Fleas have bodies that flatten on either side, without wings, the third pair of legs develop adaptive to jumping.
Biological
Fleas are parasites, metamorphosis completely.



. Larvae have a deep, cocoon-like form. Fleas parasitize mainly on rodents and cattle, particularly Tunga penetrans and Pelex irrtans have parasites in humans. Adult fleas suck blood from both males and females. A change in body temperature will cause the flea to leave the host
Role of disease transmission
Plague :
Caused by the bacteria Yesinia pestis, which often causes outbreaks. The disease was originally caused by rodents, rats near humans and spread among mouse populations mainly due to Xenopsylla cheopis.
Image Adult fleas
When an epidemic in rats causes a lot of death in mice, the X.cheopis flea can but attack humans and cause human plague. Pulex ticks irritans have the role of transmitting plague between people under a mechanical transmission mechanism in the case of people living together, close to each other.
Other diseases:
Fleas transmitted by Rickettsia mooseri cause rat typhus but sometimes occur in people especially in the port area.



. Fleas also transmit germs, viruses, and Trypanosoma spp. mainly in nematode species
Intermediate host role
Ctenocephalides canis fleas are intermediate hosts of Dipylidium caninum tapeworms that parasitize dogs and cats but sometimes humans, especially children, are also infected with D.canium by swallowing Ct.canis fleas that contain the larvae of D.canium.
Roles cause disease
Because fleas suck blood, it can cause itching, allergies, and can also cause neurological disorders and insomnia.
Parasite in the skin: Tunga penetrans or cat flea parasites in the skin, usually on the feet that cause skin irritation, ulcers and abscess. The first flea parasite is only about 1mm long but can then grow to 1cm long.
3.



Louse
Pubic lice Phthirus pubis (or P.inguinalis) shares the same Anoplura family, the Pediculidae family with lice. The shape of the lice is a bit rough, the body is short but the breadth is wide, the shape is inverted trapezoid. The last two pairs of legs are very big, like crabs, so there is a place called "crab lice".
Image Adult adult louse
Lice have an incomplete developmental cycle. Parasitic lice in the genital hair, rarely seen in the armpits, mustache, beard, eyelashes, eyebrows. Spread mainly through intercourse.
The lice suck blood but the lice do not transmit any pathogens Pubic lice cause itching due to blood sucking, weak pubic area, secondary infections, and impulses.
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