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The viral diseases yellow fever, dengue fever, Zika fever and chikungunya are transmitted mostly by Aedes aegypti mosquitoes. [ citation needed ] Other viral diseases like epidemic polyarthritis , Rift Valley fever , Ross River fever , St. Louis encephalitis , West Nile fever , Japanese encephalitis , La Crosse encephalitis and several other ...
Aedes aegypti (/ˈiːdiːz/ from Greek αηδής: "hateful" and /aɪˈdʒɛpti/ from Latin, meaning "of Egypt"), the yellow fever mosquito, is a mosquito that can spread dengue fever, chikungunya, Zika fever, Mayaro and yellow fever viruses, and other disease agents.
Appropriate antibiotic treatment should be started immediately when there is a suspicion of Rocky Mountain spotted fever. [10] Treatment should not be delayed for laboratory confirmation of disease as early initiation of treatment of Rocky Mountain spotted fever is associated with lower mortality. [25]
The warning symptoms of severe dengue usually appear between 24 and 48 hours after the fever has disappeared. If a person experiences abdominal pain, vomiting (at least three times in a 24-hour period), bleeding from the nose or gums, and/or feeling fatigued, agitated, or irritable, it is crucial to seek medical attention immediately.
The test was once part of the World Health Organization (WHO) algorithm for diagnosis of dengue fever, [3] however it is no longer used in the latest WHO guidance. [4] Studies have shown that the tourniquet test has low predictive value for dengue fever and should be used in conjunction with other tests for a reliable diagnosis. [5] [6] [7] [8]
However around 10% of those 800,000 had not had dengue fever before and therefore are at risk of severe infection because of the vaccine. [ 2 ] In the Philippines, the Dengvaxia controversy has contributed to overall vaccine hesitancy because of heightened concerns about vaccine safety.
Omsk Hemorrhagic Fever could be diagnosed by isolating virus from blood, or by serologic testing using immunosorbent serological assay. OHF rating of fatality is 0.5–3%. Treatment is supportive; there is no specific treatment for OHF. This helps maintain hydration and provides precautions for patients with bleeding disorders.
At EW 19 in Late May, Brazil made up the vast majority of cases of dengue fever reported in Latin America and the Caribbean in 2024, with 83% of suspected cases arising from Brazil, along with 79.4% of deaths. 6,803,727 cases were reported, and 2,897 deaths have been reported.