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Chikungunya Ιός, Antibodies IgG

The measurement of IgG Antibodies against the Chikungunya virus is used in the diagnosis of recent infection with the virus in patients with recent travel to endemic areas and a compatible clinical syndrome.

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Chikungunya is a viral disease caused by the chikungunya virus (CHIKV), an RNA virus of the genus Alphavirus, family Togaviridae, which is transmitted to humans primarily through the bite of infected Aedes mosquitoes, particularly Aedes aegypti and Aedes albopictus. The word "chikungunya" is derived from the African Kimakonde language, meaning "to become contorted" or "to walk bent over," describing the characteristic joint pain associated with the disease.

Transmission: The chikungunya virus is primarily transmitted to humans through the bite of infected mosquitoes. The Aedes mosquitoes that carry the virus are active during the daytime, and their breeding sites are often found in and around human settlements.

Geographic Distribution: Chikungunya is found in many parts of the world, predominantly in Africa, Asia, Europe, and the Indian subcontinent. However, in recent years, outbreaks have occurred in the Americas, including the Caribbean, Central America, and South America.

Symptoms: The typical symptoms of chikungunya include:

  • High fever (often above 39°C)
  • Severe joint pain (arthralgia), often affecting the small joints of the hands and feet, wrists, ankles, and knees
  • Muscle pain (myalgia)
  • Headache
  • Rash
  • Fatigue
  • Nausea and vomiting (less common)

Incubation Period: After being bitten by an infected mosquito, the incubation period for chikungunya ranges from 2 to 12 days, with an average of 3 to 7 days.

Diagnosis: Chikungunya is diagnosed based on clinical symptoms, and history of exposure to infected mosquitoes, and confirmed through laboratory testing, such as serological tests or viral RNA detection.

Treatment: There is no specific antiviral treatment for chikungunya. Treatment primarily focuses on relieving symptoms, such as managing fever and pain. Rest, adequate hydration, and over-the-counter pain relievers are typically recommended.

Prevention: Preventing mosquito bites is key to preventing chikungunya. Measures include using mosquito repellents, wearing protective clothing, keeping windows and doors screened or closed, and eliminating mosquito breeding sites by reducing stagnant water sources.

Complications: While most cases of chikungunya resolve on their own, some individuals may experience persistent joint pain (chronic chikungunya arthritis) that can last for months or even years. Severe cases can occur, particularly in vulnerable populations such as the elderly, newborns, and individuals with underlying health conditions.

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