Transcript Viral & Bacterial Diseases

Viral & Bacterial Diseases
Messana
Science 8
Chapter 25
VIRAL DISEASES
AIDS
•Caused by HIV
Virus (Human ImmunoDeficiency Virus)
•Diminishes
function of
immune system
•Susceptible to
infections
•Treat with AntiViral Drugs
•Deadly
•Acquired Immune Deficiency
Syndrome
Influenza
(Flu)
•Contagious
Respiratory Illness
•Fever/Chills
•Vomiting/Diarrhea
•Body
Aches/Fatigue
•Cold Symptoms
•Recover within 2
weeks if no
complications
Common
Cold
•Over 200 cold
viruses
•Coughing,
sneezing,
watery eyes,
runny nose,
sore throat
•Recover
within 1 week
Polio
•Affects nerves
•Can lead to
paralysis
•Have
vaccination for
it
•Wiped out in
many
countries
Chicken Pox
•Childhood disease
•Shingles is adult
version
•Itchy, fluid-filled
blisters that will
scab over
•Have vaccine for it
•Very contagious
before you know
you have it
Smallpox
•U.S. stopped
giving vaccine in
1972, stopped by
1980 worldwide
•Virus wiped out
worldwide in 1977
•Causes raised pink
skin rash that turns
into sores, then
crusts over
•Threat of use in
biological warfare
Yellow
Fever
•Spread by
Mosquitos
(Vector!)
•South America/
Africa
•Causes Liver or
Kidney Failure
•Have vaccine
Viral
Meningitis
•Infection of fluid
around brain and
spinal cord
•Viral is less severe
than bacterial
•Spread through
person-to-person
contact or
mosquito
•May have a stiff
neck
West Nile
Virus
•Mosquito bites
infected bird,
mosquito acts as
vector, bites
human and
transfers disease
•Prognosis is good
Warts
•Growths on the skin
•Caused by Human
Papilloma Virus (HPV)
•Transmission from
person to person is
uncommon
•Can treat with over-thecounter meds – except for
face or genital warts
•Gardasil Vaccine is used
for prevention of warts
and cervical cancer
caused by HPV in women
Ebola
•Causes Ebola
Hemorrhagic
Fever
•In Africa, where
health care is
not good
•Death within 2
weeks from
massive blood
loss
Rabies
•Spread by infected
animal (dog, bat,
raccoon, fox, skunk)
•Saliva is passed when
animal bites human
•Virus passes to brain,
causes inflammation
•Drooling,
Convulsions, Foaming
at mouth
•Death within week
•Is a vaccine that must
be given right after
bite
Mononucleosis
•“Kissing Disease”
•Passed through
sharing saliva
•Swollen lymph
nodes (neck),
fatigue, white on
tonsils, sore throat,
fever, enlarged
SPLEEN
•Must avoid
physical contact in
activity
BACTERIAL
DISEASES
Syphilis
•Sexually
transmitted
•Painless
sores, skin
rash
•3 Stages – 3rd
stage spreads
to heart,
bones, brain,
nervous
system, skin
•Treated with
penicillin
Leprosy
•Skin lesions
•Stuffy nose
•Nerve
Damage
•Disfigurement
•Treat with
antibiotics
Tetanus
•Get the vaccine!
•Spore gets into body
through wound and
releases bacteria
•Bacteria create
poison that blocks
nerve signals from
spinal cord to muscles
•Lockjaw
•Arching from back
spasms
Legionnaires’
Disease
•Lung
inflammation
caused by inhaling
legionella bacteria
•Fever, chills,
muscle aches, &
cough
•Bacteria grow in
water towers
Tuberculosis
•Contagious
bacterial infection
of lungs
•Inhale droplets
from infected
person
•Cough up mucus
or blood
•Fever, fatigue,
weight loss, night
sweats
Plague
•Bubonic,
Pneumonic,
Septicemic
•Rodents carry
disease
•Flea acts as
VECTOR to transfer
to humans
•Blood seeps into
tissues turning
them black!
Food
Poisoning
•From Salmonella
or E. coli bacteria
•From improper
handling, storage,
or washing of
foods; or
undercooked food
•Severe diarrhea,
vomiting, stomach
cramping, fever,
chills
Peptic Ulcers
•From H. pylori
bacteria in stomach
•Burning pain in
stomach, nausea,
vomiting, blood in
stools, weight loss
Lyme Disease
•Bacteria come
from mice or deer
•Ticks act as vector
to pass the
bacteria to humans
•Characteristic
“BULL’S EYE” rash
•Itching, joint
inflammation, stiff
neck, flu-like
symptoms
Bacterial
Meningitis
•Infection of fluid
around brain &
spinal cord
•3 types of bacteria
•Treat with
antibiotics!
•Very serious – can
lead to brain
damage or death
•Stiff neck,
headache, fever