Viral hemorrhagic fevers

Yellow fever

This is the most common type of outbreak in Africa. At the time, an increase in mortality was occurring on swine farms and samples from pigs that had died demonstrated evidence of infection with porcine reproductive and respiratory syndrome Viral hemorrhagic fevers virus.

In DIC, small blood clots form in blood vessels throughout the body, removing platelets necessary for clotting from the bloodstream and reducing clotting ability. Humans are infected when they come into contact with infected hosts. Most viruses work by attaching themselves to another program.

Laboratory abnormalities include elevations in liver enzymes, initial drop in leukocyte count, and thrombocytopenia. These rodent types are found worldwide, including Europe, Asia, Africa, and the Americas. Furthermore, a geographic pattern has emerged in which the Ebola-Zaire strain affects predominantly central Africa and the Ebola-Sudan strain affects Southern Sudan and East Africa.

Nosocomial human-to-human transmission can occur through droplet or direct contact. The two most common ways of spreading hemorrhagic fevers are injection in-JEK-shun and inhalation in-hal-A-shun. The first mechanism is dissemination of virus due to suppressed responses by macrophages and dendritic cell antigen presenting cells.

Guard against rodents If you live in an area where there are outbreaks of viral hemorrhagic fevers, take these steps to prevent rodent infestations in your home: Lassa Fever and Other Arenaviral Diseases Arenaviruses are transmitted from rodents to humans, except Tacaribe virus, which was found in bats but has not been reported to cause disease in humans.

Both vector surveillance and control are components of the prevention and control of vector-borne diseases, especially for transmission control in epidemic situations. Old World eastern hemisphere and New World western hemisphere viruses cause the following diseases: Renal insufficiency or failure is common, especially in hemorrhagic fever with renal syndrome.

Rather than being primordial forms of life, viruses probably evolved from rogue pieces of cellular nucleic acids. The hematocrit may be elevated.

Groups of patients should be cohorted sequestered to a separate building or a ward with an isolated air-handling system. Environmental decontamination is typically accomplished with hypochlorite e.

The partnership aims at protecting at-risk populations, preventing international spread, and containing outbreaks rapidly. In additions, some pigs had evidence of co-infection with the Reston-Ebola strain Miranda Blood collected within a few hours after death by cardiac puncture can be used for diagnosis.

Hemorrhagic viruses live in rodents like mice and rats. Treatment Good and early supportive treatment in hospitals improves survival rates. Risk of Lassa virus infection is associated with peridomestic rodent exposure, where inappropriate food storage increases the risk for exposure.

Virus is transmitted through inhalation of aerosols from rodent urine, ingestion of rodent-contaminated food, or direct contact of broken skin or mucosa with rodent excreta.

Because the incubation period may be as long as 21 days, patients may not develop illness until returning from travel; therefore, a thorough travel and exposure history is critical.

Get vaccinated The yellow fever vaccine is generally considered safe and effective, although in rare cases, serious side effects can occur. Direct contact should be avoided with corpses of patients suspected of having died of CCHF or arenavirus infection.

Overview of viral hemorrhagic fevers. People over 60 years of age should be given the vaccine after a careful risk-benefit assessment.The Ebola outbreak that began in West Africa in early is the worst outbreak of this virus in history. The Ebola virus has a high mortality rate: in the three countries most affected by the.

May 31,  · New World arenaviruses: Junin (Argentine hemorrhagic fever), Machupo (Bolivian hemorrhagic fever), Guanarito (Venezuelan hemorrhagic fever), Sabia (Brazilian hemorrhagic fever), and the recently discovered Chapare virus (single case in Bolivia).

Lassa fever

Jul 24,  · Ebola virus (see the image below) is one of at least 30 known viruses capable of causing viral hemorrhagic fever syndrome. The genus Ebolavirus is currently classified into 5 separate species: Sudan ebolavirus, Zaire ebolavirus, Tai Forest (Ivory Coast) ebolavirus, Reston ebolavirus, and Bundibugyo outbreak of Ebola virus disease in West Africa, involving Zaire ebolavirus.

Viral hemorrhagic fevers are a group of illnesses caused by four families of viruses including Ebola and Marburg, Lassa fever, and yellow fever. Viral hemorrhagic fevers are spread by contact with infected animals, people or insects. No current treatment can cure viral hemorrhagic fevers, and immunizations exist for only a few types.

Until additional vaccines are developed, the best approach is prevention. Symptoms. Mar 16,  · Viral hemorrhagic fevers (VHFs) are a group of febrile illnesses caused by RNA viruses from several viral families. These highly infectious viruses lead to a potentially lethal disease syndrome characterized by fever, malaise, vomiting, mucosal and gastrointestinal (GI) bleeding, edema, and.

Viral hemorrhagic fevers
Rated 3/5 based on 11 review