BELL WORK

Write about how you could prevent communicable diseases from spreading.

COMMUNICABLE DISEASES

COMMON COMMUNICABLE DISEASES

OBJECTIVES

• explain what causes colds and how they can be treated.

• identify some common communicable diseases.

• describe the symptoms of some common communicable diseases.

WHEN YOU HAVE A COLD

GET PLENTY OF RESTSOME OTC MEDICINES CAN HELP

RELIEVE COLD SYMPTOMSSTAY HOME AT LEAST 24 HOURS AFTER

COLD SYMPTOMS APPEAR

FLU SYMPTOMS

FEVER HEADACHESMUSCLE ACHESRESPIRATORY PROBLEMS

FLU

The flu is spread by one of three main types of influenza viruses, each with several different strains.

Scientists try to anticipate which strains will spread fastest and create enough flu vaccines for the following year.

CONTAGIOUS PERIOD

Often, the contagious period of a communicable disease includes a length of time before the infected person starts to show symptoms.

contagious period The length of time that a particular disease can be spread from person to person

MONONUCLEOSIS

Mononucleosis is spread through contact with the saliva of an infected person.

mononucleosis A viral disease characterized by a severe sore throat and swelling of the lymph gland

Mono is also spread through sharing contaminated eating utensils and drinking glasses.

HEPATITIS

There are three types of hepatitis.hepatitis A viral disease of the liver

characterized by yellowing of the skin and the whites of the eyes

HEPATITIS

HepatitisA

HepatitisB

• Most commonly spread through food or water that has been contaminated with human waste.

• Vaccines can protect people from this type.

• Most commonly spread through contact with contaminated blood or other body fluids.

• Vaccines can protect people from this type.

HepatitisC

• Most commonly spread through contact with contaminated blood or other body fluids.

• Medications can help treat people with this type.

TUBERCULOSIS

Because tuberculosis spreads easily through the air, people are regularly tested for the disease.

tuberculosis A bacterial disease that usually affects the lungs

Sometimes people who test positive for TB show no symptoms.

PNEUMONIA

Pneumonia can be caused by a virus or bacteria.

pneumonia A serious inflammation of the lungs

Pneumonia can be spread through direct or indirect contact.

STREP THROAT

Left untreated, strep throat can lead to serious complications, such as heart or kidney damage.

strep throat A sore throat caused by streptococcal bacteria

Strep throat is spread through direct or indirect contact and can be easily treated with antibiotics.

STREP THROAT

Symptoms of strep throat include a red and painful throat, fever, and swollen lymph nodes in the neck.