Hantavirus infection overview: Difference between revisions
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==Screening== | ==Screening== | ||
==Natural History, Complications and Prognosis== | ==Natural History, Complications and Prognosis== | ||
If hantavirus infection left untreated, it may result in multi-organ failure and death. Possible complications include, acute [[encephalomyelitis]], [[Pituitary]] hemorrhage, [[Glomerulonephritis]], [[Pulmonary edema]][[Acute respiratory distress syndrome|, acute respiratory distress syndrome]], [[Disseminated intravascular coagulation]], [[Thrombocytopenia]], and shock. Its prognosis depends on the extent of the diseases. The hantavirus cardiopulmonary syndrome (HCPS) has 38% mortality rate but, hemorrhagic fever with renal syndrome (HFRS) has a better prognosis with 1 to 15% mortality rate.<ref name="pmid9468181">{{cite journal |vauthors=Crowley MR, Katz RW, Kessler R, Simpson SQ, Levy H, Hallin GW, Cappon J, Krahling JB, Wernly J |title=Successful treatment of adults with severe Hantavirus pulmonary syndrome with extracorporeal membrane oxygenation |journal=Crit. Care Med. |volume=26 |issue=2 |pages=409–14 |year=1998 |pmid=9468181 |doi= |url=}}</ref><ref name="pmid16940866">{{cite journal |vauthors=Mertz GJ, Hjelle B, Crowley M, Iwamoto G, Tomicic V, Vial PA |title=Diagnosis and treatment of new world hantavirus infections |journal=Curr. Opin. Infect. Dis. |volume=19 |issue=5 |pages=437–42 |year=2006 |pmid=16940866 |doi=10.1097/01.qco.0000244048.38758.1f |url=}}</ref><ref name="pmid8004332">{{cite journal |vauthors=Levy H, Simpson SQ |title=Hantavirus pulmonary syndrome |journal=Am. J. Respir. Crit. Care Med. |volume=149 |issue=6 |pages=1710–3 |year=1994 |pmid=8004332 |doi=10.1164/ajrccm.149.6.8004332 |url=}}</ref> | |||
==Diagnosis== | ==Diagnosis== | ||
Revision as of 20:12, 7 July 2017
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Hantavirus pulmonary syndrome (HPS) is a deadly disease from rodents.
Historical Perspective
In May 1993, an outbreak of an unexplained pulmonary illness occurred in the southwestern United States, in an area shared by Arizona, New Mexico, Colorado and Utah known as "The Four Corners." A young, physically fit Navajo man suffering from shortness of breath was rushed to a hospital in New Mexico and died very rapidly.
Classification
Hantavirus infection can be classified on the basis of the clinical manifestations and the type of hantavirus responsible for the manifestation. The clinical manifestations may include hantavirus cardiopulmonary syndrome (HCPS), hemorrhagic fever with renal syndrome (HFRS) and nephropathia epidemica (NE).[1]
Pathophysiology
Hantavirus is usually transmitted via the inhalation of aerosolized viral antigens or rodent bites. The incubation period of hantavirus infection is of 9 to 33 days. Following inhalation, the virus replicates in pulmonary macrophages and dendritic cells. The primary target cells of hantavirus infection are endothelial cells of capillaries. Infection is followed by impairment of the barrier function of endothelial cells, fluid extravasation, and subsequent organ failure.
Causes
Hantaviruses belong to the bunyaviridae family of viruses. There are 5 genera within the bunyaviridae family: bunyavirus, phlebovirus, nairovirus, tospovirus, and hantavirus. Each is made up of negative-sensed, single-stranded RNA viruses. All these genera include arthropod-borne viruses, with the exception of hantavirus, which is a genus of rodent-borne agents.
Differentiating Hantavirus from other Diseases
Epidemiology and Demographics
Risk Factors
Little is known about activities that lead to a greater risk of infection. However, an early case-control study suggests that increased numbers of rodents in the household is the strongest risk factor for infection.
Screening
Natural History, Complications and Prognosis
If hantavirus infection left untreated, it may result in multi-organ failure and death. Possible complications include, acute encephalomyelitis, Pituitary hemorrhage, Glomerulonephritis, Pulmonary edema, acute respiratory distress syndrome, Disseminated intravascular coagulation, Thrombocytopenia, and shock. Its prognosis depends on the extent of the diseases. The hantavirus cardiopulmonary syndrome (HCPS) has 38% mortality rate but, hemorrhagic fever with renal syndrome (HFRS) has a better prognosis with 1 to 15% mortality rate.[2][3][4]
Diagnosis
History and Symptoms
=Physical Examination
Laboratory Findings
A positive serological test result, evidence of viral antigen in tissue by immunohistochemistry, or the presence of amplifiable viral RNA sequences in blood or tissue, with compatible history of HPS, is considered diagnostic for HPS.
X ray
CT scan
MRI
=Ultrasound
Other Imaging findings
Other Diagnostic Studies
Treatment
Medical Therapy
There is no specific treatment, cure, or vaccine for hantavirus infection. However, we do know that if infected individuals are recognized early and receive medical care in an intensive care unit, they may do better.
Surgery
Primary Prevention
Eliminate or minimize contact with rodents in your home, workplace, or campsite. Seal up holes and gaps in your home or garage. Place traps in and around your home to decrease rodent infestation. Clean up any easy-to-get food. Recent research results show that many people who became ill with HPS developed the disease after having been in frequent contact with rodents and/or their droppings around a home or a workplace. On the other hand, many people who became ill reported that they had not seen rodents or rodent droppings at all. Therefore, if you live in an area where the carrier rodents are known to live, try to keep your home, vacation place, workplace, or campsite clean.
Secondary Prevention
References
- ↑ Jiang H, Zheng X, Wang L, Du H, Wang P, Bai X (2017). "Hantavirus infection: a global zoonotic challenge". Virol Sin. 32 (1): 32–43. doi:10.1007/s12250-016-3899-x. PMID 28120221.
- ↑ Crowley MR, Katz RW, Kessler R, Simpson SQ, Levy H, Hallin GW, Cappon J, Krahling JB, Wernly J (1998). "Successful treatment of adults with severe Hantavirus pulmonary syndrome with extracorporeal membrane oxygenation". Crit. Care Med. 26 (2): 409–14. PMID 9468181.
- ↑ Mertz GJ, Hjelle B, Crowley M, Iwamoto G, Tomicic V, Vial PA (2006). "Diagnosis and treatment of new world hantavirus infections". Curr. Opin. Infect. Dis. 19 (5): 437–42. doi:10.1097/01.qco.0000244048.38758.1f. PMID 16940866.
- ↑ Levy H, Simpson SQ (1994). "Hantavirus pulmonary syndrome". Am. J. Respir. Crit. Care Med. 149 (6): 1710–3. doi:10.1164/ajrccm.149.6.8004332. PMID 8004332.