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Definition
The name “chikungunya” derives from a word in the Kimakonde language, meaning “to become contorted”, and describes the stooped appearance of sufferers with joint pain (arthralgia). Chikungunya is a mosquito-borne viral disease transmitted to humans by infected mosquitoes. Aedes aegypti mosquito (also called yellow fever mosquito) is the primary transmission agent of Chikungunya Virus. Presence of stagnated water in and around human inhabitation is one of the main causes of increased aedes mosquito population.
Symptoms
Chikungunya typically starts with one or more of the following symptoms - chills, fever, vomiting, nausea, head ache and joint pain. The attack is sudden and sometimes it is accompanied with rashes. Severe joint pain is the main and the most problematic symptom of Chikungunya.
Statistics
Regarding mosquito seasonal abundance, all areas below 13ºC showed no adult mosquito activity, except for Santa Rosa in May and La Plata in June that showed low abundance .The correlation between abundance classes and temperature intervals was 0.59 (Spearman method, z = 5.48, p < 0.0001). Looking at the 13ºC isotherm as TDT for the vector, the northeast presents suitable conditions all over the year. The northern half of the country, excluding western highland fringes, has favourable conditions from September until May, whereas south of Neuquén the theoretical suitable period is restricted to November-March.
