chikungunya

Historically, chikungunya virus was limited to Southeast Asia and Africa but has recently emerged in the Americas, with outbreaks in Central and South America and the Caribbean. No vaccine is available.
Symptoms resemble dengue fever, including abrupt onset of fever (≥39.0 °C [102.2 °F]) and severe bilateral and symmetrical polyarthralgia, often involving the hands and feet.
A maculopapular rash on the limbs and trunk is common.
Rarely, central nervous system, ophthalmologic, hepatic, and kidney manifestations are present.
Abnormal laboratory findings include lymphopenia, thrombocytopenia, and elevated aminotransferase levels. Definitive diagnosis relies on serologic assays or detection of viral RNA by reverse transcriptase PCR testing.
Disease is generally self-limited, resolving in 7 to 10 days. However, some patients may experience relapsing and chronic rheumatologic symptoms for months or even years. Symptomatic treatment includes NSAIDs and aspirin avoidance (risk of bleeding complications and potential risk of Reye syndrome in children).

ID
ID
- related: Step 3, Medicine
MKSAP
Dengue
dengue
- related: zika, dengue, chikungunya
- Dengue fever is the most prevalent arthropod-borne viral infection in the world. Endemic areas include Southeast Asia, the South Pacific, South and Central America, and the Caribbean.
- The incubation period is 4 to 7 days. Patients may be asymptomatic or present with an ==acute febrile illn
Zika
Zika
- related: ID, dengue, chikungunya
Arboviruses are spread by arthropod vectors. Mosquitoes spread most travel-related arboviral diseases. Some arboviruses, such as yellow fever, are endemic throughout the tropics, and several countries require proof of vaccination before allowing entry by travelers. Other viruses, such as Japanese encephalitis, have more restricted geographic areas. The dengue fever, chikungunya, and Zika arboviruses are all spread by _A

ID