Dica de Vestibular: DENGUE
Autor: Prof. Nicketa - Biologia | Publicado: 2013-03-28T15:24:00-07:00

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&nbsp; &nbsp; &nbsp; &nbsp;Bom pessoal, alguns temas
merecem destaque para o vestibular. Para aqueles que se mantém informados, as
recentes notícias sobre os casos de dengue no Brasil, mostram o total descaso
do governo com a população. O problema, para o governo, é que a dengue não
acomete apenas a população mais carente, afinal de contas, seu vetor (agente
transmissor) é um mosquito denominado Aedes aegypti (lembrem-se, nome
científico deve ser escrito corretamente de acordo com a nomenclatura
binomial). Aqueles que se preocupam em eliminar o vetor acabam pagando por
aqueles que não estão nem aí (muitas vezes seu próprio vizinho). É preciso
acabar com os focos de reprodução eliminando toda e qualquer água parada em sua
residência. Basta lembrar que o mosquito que nasce no vizinho, voa.

&nbsp; &nbsp; &nbsp; &nbsp; Por estes motivos, a
conscientização, mais uma vez, é a melhor forma de prevenção contra esta que
pode se tornar uma epidemia nacional.&nbsp;O agente causador da doença
é um vírus (Flavivirus) que apresenta RNA de cadeia simples. Existem quatro
variedades do vírus (tipo 1, 2, 3 e 4). Na forma mais branda da doença
(conhecida como dengue clássica), os principais sintomas são: febre, dores
musculares, dores nas juntas (febre quebra-osso), manchas vermelhas na pele com
pequenas manifestações hemorrágicas. Estes sintomas regridem dentro de uma
semana, mais ou menos.

&nbsp; &nbsp; &nbsp; &nbsp;A forma mais grave,
conhecida como dengue hemorrágica, ocorre se houver contato posterior com algum
outro sorotipo do vírus. Os sintomas inicias são parecidos mas, no terceiro ou
quarto dias, começam a ocorrer sangramentos internos, dores abdominais com
períodos alternantes de agitação e letargia, podendo levar o indivíduo à morte.

&nbsp; &nbsp; &nbsp; &nbsp; O mosquito vetor, Aedes
aegypti é muito comum no Brasil e de fácil reconhecimento. Apresenta o
corpo todo rajado de branco e preto (se olhar de perto, verá essas marcas nas
patas). Se você encontra esse mosquitos diariamente em sua casa não se desespere
pois somente aqueles contaminados com o vírus é que transmitem a doença. Vale
lembrar que somente a fêmea desta espécie é que pica, o macho se alimente de
néctar e sucos vegetais.

Não há tratamento
específico para a doença, os médicos utilizam antitérmicos, analgésicos e
reposição líquida no combate à doença. Antiinflamatórios e aspirina (ácido
acetilsalicílico) não devem ser tomados pois favorecem as heomorragias.


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