Kategoriak: All - viruses - transmission - causes

arabera OBENEFIRO ABU 3 years ago

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VIRUSES

Several RNA-containing viruses are discussed, including Rhabdovirus, Hantavirus, Arenavirus, and Flavivirus. These viruses cause serious diseases such as viral encephalitis, rabies, Eastern Equine Encephalitis, and lymphocytic choriomeningitis.

VIRUSES

VIRUSES

RNA containing viruses

Coronavirus
COVID-19

respiratory syndrome

resembles SARS

Middle East Respiratory Syndrome(MERS)

transmitted to humans by infected camels

epidemic in the middle eastern countries

Severe Acute Respiratory Syndrome (SARS)

transmitted to humans by bats

pandemic

Rhabdovirus

Viral encephalitis

Rabies virus

Retrovirus (Oncornavirus)
HIV

AIDS related complex

AIDS

cancer

Nasopharyngeal carcinoma
Lentivirus

They weren’t infecting humans initially only animals until AIDS

Human breast cancer
Human T-cell lymphotropic virus (HTLV)

Human T-cell leukemia

sarcoma

lymphoma

leukemia

Reovirus (Rotavirus)
Can also be found on Cruise ship and they cause minor GI disorder
Includes human reovirus
Hantavirus
Eastern Equine Encephalitis (EEE)
transmitted by two mosquitoes

Culiseta morsitans

Culiseta melanura

Host: Horses
Discovered: Eastern part of United States

HA

altered mental status

paralysis

brain swelling

Ebola

Deadly disease; death usually occurs within 10 days

referred to as a “bleeding out” type of disease

West Nile virus

High fever

West Nile encephalitis

Transmitted by mosquitoes -Culex Univittatus

Host: Bird

St Louis Encephalitis virus

Causes: St. Louis encephalitis

Transmitted by mosquitoes -Culex Tarsalis

Zika virus
Chikungunya virus
Dengue fever virus

myalgia

arthralgia

shock

headache

aches

severe convulsion

also called ‘break bone fever’ or break bone disease

Yellow fever virus

Transmitted by mosquitoes -Aedes aegypti

hemorrhagic fever

hepatitis

Togavirus
Arbovirus

Arthropod borne virus

Flavivirus

Rubella Virus

causative agent of German measles

It can be fatal to infants and developing fetus, hence fatal to pregnant women and can lead to death of infants and developing fetus

Encephalitis virus

causes: Meningoencephalitis

Subtopic
Picornavirus
Enterovirus

Echo virus

Rhinovirus

Coxsackievirus

Causes GI tract infections and esp. people who gets sick on the ship cruise with NVD and other respiratory problems

Coxsackie B

Coxsackie A

Polio virus

Poliomyelitis

Rhinovirus (Nasal)

respiratory type infections

Paramyxovirus
Respiratory syncytial virus (RSV)

Causes

Mumps

Measles (also called Rubeola virus)

Rubeola virus: Regular measles, it is more severe than the German measles

respiratory distress esp. in children

Parainfluenza virus
Orthomyxovirus
Type C (flu C)
Type B (flu B)
Type A (flu A)

Affects Humans

Examples

H5N1 (Avian flu)

H1N1 (Swine flu)

Arenavirus
Lymphocytic Choriomeningitis Mammarenavirus (LCMV)
Lymphocytic choriomeningitis (LCM)

rodent-borne viral infectious disease

meningoencephalitis

aseptic meningitis

Lassa fever

swollen baby infection

NVD

back, chest and abdominal pain

proteinuria

conjunctivitis

facial edema

Hemorrhagic fever

DNA containing viruses

Poxviruses
Eczema
Chicken pox
Variola virus

smallpox

Vaccinia virus

Vaccinia virus + equine virus --> a product that looks exactly like HIV

cowpox

Papovavirus
Vacuolating virus

Ex: Simian vacuolating virus (SV 40)

Infected the early batches of polio vaccines and caused a lot of CNS problems

Polyoma virus

Ex: John Cunningham virus (JC virus)

Progressive Multifocal Leukoencephalopathy (PML) (a severe deadly brain disease)

Papilloma virus

Drug: Condylox

Causes: Condyloma acuminata (genital warts)

Herpes virus
Human herpes virus 6 (HHV 6)

Mainly affects infants (children about 2 years old)

Roseola infantum

affect the CNS

extreme fever

seizures

encephalitis

cause infant to cry a lot

Human herpes virus 8 – (HHV 8)

Kaposi sarcoma

looks like a bluish purplish lesions/patches on the skin

seen mostly in immunosuppressed patients e.g., HIV and AIDS patients

malignant cancer of the skin

Epstein Barr virus (EBV)

Nasopharyngeal carcinoma in humans

Infectious mononucleosis

Hepatitis

Burkitt lymphoma

Marek’s virus disease (Avian leukemia)

cause cancer in humans

Cytomegalovirus (CMV)

It can also infect other parts of the body

one of the leading causes of blindness in AIDS patients

Herpes Zoster Virus (HZV)

shingles in adults

Varicella Zoster Virus (VZV)

chicken pox in children

Herpes simplex virus (HSV)

HSV 2

Cold sores

more likely than HSV 1 to cause Genital herpes

HSV 1

skin diseases

Keratoconjunctivitis

Encephalitis

Genital herpes

more likely than HSV 2 to cause Cold sores

Adenoviruses
CARRIES AN ANTIGEN
JANSSEN
INFECTIONS

URTI type infections

cough

cold symptoms

wheezing

sneezing

DISEASES CAUSED

Keratitis (eye disorder)

respiratory organs disorders