Common Viral Diseases Two examples of Viral diseases are Hepatitis and Mononucleosis (mono).

Hepetitis causes the liver to swell, and the yelowing of the skin. It is spread by the contamination of water of food, and the exposure to another’s fluids.

Mono’s symptoms include fever, weakness, swollen lymph nodes, and sore throats. It is often caused by coming in cantact with the saliva of an infected person.

Other types of Infections --- Althetes foot and Ringworm are caused by FUNGI. --- Amebic dysentery ( the swelling of the intestine caused by an amoebia) and Malaria are caused by PROTISTS. ---Both tape worm and head lice are PARASITIC infections.

Working Towards the Future

Oraganizations like the CDC and NIH, are working towards better public health for everyone because this come make the spread of disease bacome less and less.

By Emily Behr

Diseases affect everyone because

there is simply no way to avoid the

pathogens in our environment. The

best thing we can do is to lessen our

chances of getting a disease.

Strep throat is a very

common bacterial disease,

caused by mucus contact

with another person.

Symptoms include a

sore throat, &

swollen lymph

nodes.

Meningitis occurs when the

membrane of the brain and

spinal cord swells. It is spread

by a pathogen from the saliva

of an infected person.

Symptoms include, fever,

neck pain, headaches, and

nausea.

13.3 Common Bacterial

Sicknesss Keeping

Infectious

Diseases at Bay

I have abided by the HFA Honor

Code in completing this

assignment.

13.1 Infectious diseases

Caused by an agent entering the body

Can be passed a person via:

o Other people

o Food and water

o Animals

o Environment

These sicknesses are pathogenic

(from a disease-causing agent).

Different examples of pathogens

are bacteria, viruses, fungi,

protists, and parasites.

Infectious Diseases

Pathogens

Bacteria Single-celled, tons of them everywhere, some bad, some good

Viruses Made up of DNA and a capsid (protein coat)

Fungi Absorb nutrients from the living or dead, some cause disease, some don’t

Protists Bigger, more complex than bacteria

Parasites Get their nutrients from feeding on the hosts

Treatment and Prevention

Two ways to treat or prevent infectious disease would be antibiotics and keeping good hygiene.

The downside to antibiotics is the growing problem,

antibiotic resistance. This can happen when a

person is inconsistent with his or her intake of the

medicine, resulting in the survival of resistant

bacteria. Then it can spread to other people.

In order to prevent the resistance:

Always finish the prescription that the

doctor tells you to.

Only the person with the prescription

should take the medicine.

13.2 Protection

Our bodies fight diseases in multiple

ways. We have a system made up of

many parts.

1. First the body uses skin as a

physical barrier.

2. Then inflammation (turning

red and swelling)

3. Lastly, the immune system

uses lymph and white blood

cells (as a team) to defeat

viruses.

To stay well, people should keep the

body healthy by eating a diet full of the

right foods, drinking enough water,

exercising, de-stressing, getting good

sleep, and avoiding contact with sick

people.

The best way to become immune is to

get a vaccination, so antibodies can

develop a resistance. This way, when

the pathogen comes along, the

antibodies remember it, and fight it!

WHEN SICK:

Stay home and rest.

Do as your doctor says.

Wash hands and get fluids.