RNA Viruses Overview and Transmission Patterns

<p>Replica de virus con modificationes in le genome (D)</p> Signup and view all the answers

<p>Le virus es excretate per lysis (C)</p> Signup and view all the answers

<p>Convertir RNA in DNA (D)</p> Signup and view all the answers

<p>CXCR4 (D)</p> Signup and view all the answers

<p>Contine mRNA virale (A)</p> Signup and view all the answers

<p>DENV1 (B)</p> Signup and view all the answers

<p>Emorragia nasal (C)</p> Signup and view all the answers

<p>8-10 dies (A)</p> Signup and view all the answers

<p>Vomito de sanguine (C)</p> Signup and view all the answers

<p>Bassa de platelets (C)</p> Signup and view all the answers

<p>Normalisation de signa vital (D)</p> Signup and view all the answers

<p>Melena (D)</p> Signup and view all the answers

<p>Immunitate permanete ad tote le serotypes (D)</p> Signup and view all the answers

<p>Utilisa le acido sialico del hoste per entrar in le celsulas. (C)</p> Signup and view all the answers

<p>Flaviviridae. (C)</p> Signup and view all the answers

<p>ssRNA plus DNA. (A)</p> Signup and view all the answers

<p>Celsulas Th lymphocytes. (D)</p> Signup and view all the answers

<p>Immune response augmentate. (B)</p> Signup and view all the answers

<p>Presenta simmetria helical e filamentos round. (D)</p> Signup and view all the answers

<p>Causa un reponse autoimmune contra le sistema nervose. (D)</p> Signup and view all the answers

<p>Facilitar le attacco a le receptores CD4. (C)</p> Signup and view all the answers

Virus family that contains HIV, characterized by reverse transcriptase and a provirus stage.

HIV replicates in immune cells like macrophages and T-lymphocytes.

HIV has two copies of (+) ssRNA.

Influenza viruses are helical and have sialidase for binding to host cells.

Influenza viruses have surface proteins which trigger an immune response.

Influenza virus binds host cells through sialic acids.

Zika virus can cause microcephaly, congenital abnormalities, and vertical transmission.

HIV's DNA copy inserted into the host's chromosome.

HIV enters cells by binding to CD4 and a coreceptor (either CCR5 or CXCR4) on the surface of immune cells.

New viral particles are created inside the infected cell from the viral RNA and synthesized proteins.

An enzyme that converts viral RNA into DNA.

Virus releases new viral particles by causing the host cell to break open.

HIV can switch its co-receptor preference during replication, initially using CCR5, then CXCR4.

HIV's entry involves initial binding to CD4 receptors of macrophages, followed by fusion of viral and host membranes.

Viral DNA integrates into the host cell's DNA, allowing the virus to replicate using the host's machinery.

Dengue is spread when an infected Aedes aegypti mosquito bites a healthy person, ingesting their blood. This mosquito then transmits the virus to another person when it bites them.

After a mosquito bites an infected person, it takes 8-10 days for the dengue virus to multiply inside the mosquito. Then, it takes 4-13 days after being bitten by an infected mosquito for a person to develop dengue.

This phase is marked by fever, retroorbital pain, nausea and vomiting, and rashes. It occurs after the mosquito bite and lasts for a few days.

This phase occurs after the fever subsides and can last for 24-48 hours. It's characterized by low platelet count, vomiting of blood, bloody stools, and nosebleeds.

This phase follows the critical phase. In this phase, the body starts to recover. The leakage of fluids reduces, platelets increase, and vital signs return to normal.

Once you've had dengue from one of the four serotypes (DENV1-4), you gain lifelong immunity to that specific serotype but not to the other 3.

Thrombocytopenia is a condition characterized by a low platelet count in the blood. This is a danger sign during the critical phase of dengue as it can lead to bleeding.

Dengue can cause various complications, including CNS impairment, acute kidney damage, and liver injury.