What is Transovarial transmission dengue?
Transovarial transmission of dengue virus (DENV) on Aedes aegypti is reported as other mechanisms that played a role in the transmission of dengue hemorrhagic fever (DHF). The aim of research to determine the prevalence of vertical transmission in Ae. aegypti from in several endemic areas of dengue in Indonesia.
Which mosquito is good for dengue fever?
Aedes aegypti mosquitoes spread dengue to people through bites. Dengue viruses are spread to people through the bite of an infected Aedes species (Ae. aegypti or Ae. albopictus) mosquito.
Can U Get dengue twice?
Once a person has been infected with one strain, their body will build up an immunity to only that strain of the virus. This means that a person can become infected with dengue fever another 3 times in their life. Moreover, each dengue fever reinfection is much more dangerous than the previous infection.
What is the difference between Transovarial and Transstadial transmission?
Transgenerational transmission normally occurs transovarially (through the ovaries) after the parasites infect the ovarian germinal tissue and then are transmitted transstadially to the next reproductive or blood-feeding stage.
What is Transplacental transmission?
If transplacental transmission occurs, the virus spreads through the fetus by the hematogenous route. 400,550. The severity of congenital disease in the neonate usually, but not always, correlates with intrauterine infection at an earlier gestational age.
What disease spreads Transovarial?
Finally, in transovarial transmission, certain disease-producing organisms, such as rickettsiae that cause Rocky Mountain spotted fever and scrub typhus, are transmitted from infected parent arthropods (i.e., ticks and mites) to their offspring.
What is Transstadial passage?
Transstadial transmission is the sequential passage of parasites acquired during one life stage, or stadium, through the molt to the next stage(s) or stadium.
Is Transplacental spread considered a portal of exit route?
Portal of exit: a. Sites (respiratory tract, gastrointestinal tract, genitourinary tract, skin/mucous membrane, transplacental, blood); b. Mechanisms (drainage, excretions, secretions).
What is the difference between an emerging and a reemerging disease?
PIP: Emerging infectious diseases are diseases of infectious origin whose incidence in humans has increased within the past decades or threatens to increase in the near future. The reappearance of a previously known infection after a period of disappearance or decline in incidence is known as re-emergence.