THE DEADLIEST VIRUSES AND

DISEASESLucía Ortiz Chillemi

Aroa María Reina GallarBeatriz Martínez García

What’s a virus ?

A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants tobacteria and archaea.There are submicroscopic. They are found in almost everywhere ecosystem on Earth and are the type of biological entity most abundant.

What’s a virus?

Virus particle consist of two or three parts: ᵠ The genetic material made from DNA or RNAᵠ A protein coat that protects these genesᵠ An envelope of lipids that surrounds the

protein coat when they are outside a cell

The World's Deadliest Virus

HIVEBOLARABIES ROTAVIRUSDENGUE FEVERHUMAN PAPILLOMAVIRUS

MALARIA YELLOW PLAGUESWINE INFLUENZAVIRAL HEPATITISSARSAVIAN INFLUENZA

HIVᵠ Human immunodeficiency virus infection.ᵠ Is transmitted primarily via unprotected sexual

intercourse, contaminated blood transfusions, hypodermic needles, and from mother to child during pregnancy, delivery, or breastfeeding.

ᵠ Symptoms: diarrhea, fatigue, fever, candidiasis, headache, mouth sores, muscle stiffness or pain, dermatitis and psoriasis, sore throat, swollen lymph nodes.

ᵠ There's still no known cure for HIV. There are many treatments now that can help people with HIV, nowadays many people with HIV are living much longer.

HIVIt causes an average of 3.1 million deaths each year.

EBOLAᵠ Ebola virus disease (EVD) or Ebola hemorrhagic fever (EHF).ᵠ Is transmitted to a human index case via contact with an

infected animal, via direct contact with blood or bodily fluids from an infected person or by contact with contaminated medical equipment.

ᵠ Symptoms: high fever, headache, joint discomfort and muscle aches, sore throat, diarrhea, vomiting and stomach pain, appearance of a red rash on the skin, conjunctival injection, internal and external bleeding.

ᵠ There’s no medical cure for Ebola, therefore can only symptomatic treatment or support measures.

EBOLAThe disease has a high rate of death possibly up to 90%.

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MALARIAᵠ Is transmitted by a bite from an infected

female Anopheles mosquito, which introduces the organisms from its saliva into a person's circulatory system.

ᵠ Symptoms: fever, chills, sweating, headache, nausea, vomiting, cough, bloody stools, muscle pain, jaundice (yellowing of the skin and mucous membranes), blood coagulation defects, shock, renal or liver failure, central nervous system and coma.

ᵠ There are treatment for the people infected with malaria. This treatment are drugs that interfere in the life cycle or metabolism parasite.

MALARIAThe actual number of deaths is not known with certainty.

YELLOW PLAGUEᵠ This virus is transmitted by the bite of the yellow fever

mosquito called Aedes aegypti.ᵠ Symptoms: fever, chills, muscle aches, headaches, loss of

appetite, nausea, vomiting, jaundice, bleeding.ᵠ There is no specific treatment. It must control symptoms and

maintain vital functions when organs begin to fail. Fever should be treated with paracetamol . Vaccination is the most effective measure against the spread.

YELLOW PRAGUEThis virus caused around 30000 deaths per year.

THE END