![]() ![]() Transmission can be by tick bite or by eating infected tissues. In wild members of the family Suidae, the disease seems symptomless, but in domestic pigs, it causes a haemorrhagic fever with high mortality rates. ![]() African swine fever Īfrican swine fever is a vector-borne disease of domestic pigs, warthogs, and bushpigs, caused by infection with the African swine fever virus and carried by O. It excretes the pathogen in saliva and coxal fluid. moubata exhibits vertical transmission of the pathogen across generations and thereby appears to represent its major reservoir. Unlike in most other species of Borrelia, which have rodents as reservoir hosts, B. moubata, and being responsible for the relapsing fever found in central, eastern, and southern Africa. Each species of Borrelia is typically associated with a single tick species, with Borrelia duttoni being transmitted by O. Tick-borne relapsing fever is transmitted through the bites of lice or soft-bodied ticks (genus Ornithodoros). Relapsing fever in humans is a vector-borne infectious disease caused by certain bacteria of the genus Borrelia. Role in disease Tick-borne relapsing fever Adult females lay a batch of eggs, which hatch into larvae that develop into the first nymphal stage. When ready to feed again, it finds another host for this purpose. When the nymph or adult has engorged itself, it drops off its host and enters a quiescent state while the blood is digested. Each of these stages requires a blood meal, suitable hosts being humans, poultry, and members of the pig family, Suidae. moubata involves several nymphal stages and one adult stage. It is also encountered in pigsties, soil, and crevices of human habitations. moubata typically resides in animal burrows. They also occur in southern Sudan, Somalia and southern Ethiopia, as well as the Democratic Republic of Congo, the Central African Republic and Chad, and infrequently in West Africa. This species occurs in Kenya, Malawi, Mozambique, Namibia, South Africa, Tanzania, Uganda, Zambia, and Zimbabwe, but mainly in wildlife reserves. The female grows to about 10 mm (0.4 in) long and the male to 8 mm (0.3 in). It has long mouthparts, armed with large, backward-pointing barbs for piercing a host's skin. It has no eyes, and lacks a "suture line" at the junction of the dorsal and ventral surfaces. This species has a leathery, wrinkled dorsal surface covered with small nodules. Soft ticks in the family Argasidae are characterised by the mouth being on the underside, and thus not visible from above, and by having no rigid scutum, the sclerotised plate on the anterior dorsal surface, just posterior to the head, possessed by hard ticks. It is an ectoparasite and vector of relapsing fever in humans, and African swine fever in pigs. Ornithodoros moubata, commonly known as the African hut tampan or the eyeless tampan, is a species of tick in the family Argasidae. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |