3Today’s ObjectivesDescribe a few tips to help you avoid getting sick.Explain why the common cold cannot be cured.Explain the differences between Hepatitis A, B, and C.
4You can lower your chances of catching a communicable disease by learning about the causes and symptoms of these diseases, and how to avoid them.
5Respiratory Infections Many diseases begin as respiratory infections.The respiratory tract connects the outside world to the inside of your body.
6Respiratory Infections Many communicable diseases occur in the respiratory tract, the passageway that includes the nose, throat, and lungs.Respiratory tractThe passageway that makes breathing possible
7Respiratory Infections Avoid close contact with sick people.If you’re ill, stay home.Avoiding Respiratory InfectionsAbstain from smoking.Wash your hands often.Avoid touching your mouth, eyes, and nose.Eat right and get physical activity.
8Common ColdThe common cold is a viral infection that causes inflammation of the mucous membrane.Mucous membraneThe lining of various body cavities, including the nose, ears, and mouth
9InfluenzaInfluenza, or the flu, is a viral infection of the respiratory tract.Symptoms include high fever, fatigue, headache, muscle aches, and coughing.
10InfluenzaA flu vaccination protects you from one type of flu virus that may be common that year.Getting a yearly flu vaccine is especially important for older adults and people with chronic health problems.
11PneumoniaIn severe cases, the flu can lead to pneumonia. Its symptoms are similar to those of the flu.PneumoniaAn infection of the lungs in which the air sacs fill with pus and other liquids
12PneumoniaViral pneumonia is sometimes treated with antiviral drugs.Bacterial pneumonia, if diagnosed early enough, can be treated with antibiotics.
13Strep ThroatStrep throat is a bacterial infection spread by direct contact with an infected person or through airborne transmission.Symptoms include sore throat, fever, and enlarged lymph nodes in the neck.
14HepatitisThere are three common types of hepatitis.Hepatitis is a viral infection that causes inflammation of the liver.
15One symptom of hepatitis is jaundice. A yellowing of the skin and eyes
16Some people also develop cirrhosis. HepatitisSome people also develop cirrhosis.CirrhosisScarring of the liver
17HepatitisHepatitis A usually attacks the digestive system through contact with the feces of an infected person.Common symptoms include fever, vomiting, fatigue, abdominal pain, and jaundice.
18HepatitisHepatitis B can be spread through sexual contact or contact with an infected person’s blood.It has symptoms similar to those of hepatitis A, but it can cause liver failure and cirrhosis.
19HepatitisHepatitis C can is most often spread by direct contact with needles that are contaminated with infected blood.
20HepatitisSymptoms of Hepatitis C include jaundice, dark urine, fatigue, abdominal pain, and loss of appetite. It can lead to chronic liver disease, liver cancer, and liver failure.
21Other Communicable Diseases Stay informed about communicable diseases.The more you know about these diseases and how they are transmitted, the better your chances of not getting them.
22Other Communicable Diseases TypeTransmissionMononucleosisVirusDirect ContactMeaslesVirusDirect or Indirect ContactEncephalitisVirusVectorsMeningitisVirus or BacteriaDirect or Indirect ContactChicken PoxVirusDirect or Indirect Contact
24Exit TicketInfluenza can lead to __________, a potentially fatal infection of the lungs.Which of the following habits probably will NOT help you avoid respiratory tract infections?a. Rinsing with mouthwashb. Frequent hand washingc. Avoiding close contact with ill peopled. Abstaining from smoking
253) What is the most common blood-borne infection in the United States 3) What is the most common blood-borne infection in the United States? a. Hepatitis A b. Hepatitis B c. Hepatitis C d. None of the above
26AnswerPneumoniaA. Rinsing with MouthwashC. Hepatitis C
27After You Read Reviewing Facts and Vocabulary How is a common cold different from the flu?The symptoms of the flu, which include high fever and fatigue, are more serious than the symptoms of the common cold.
28After You Read Reviewing Facts and Vocabulary What are three ways to prevent a respiratory tract infection?Sample answer: Avoid close contact with sick people. Wash your hands often. Avoid touching your mouth, eyes, and nose.
29After You Read Reviewing Facts and Vocabulary Can hepatitis be treated successfully with antibiotics? Explain.Hepatitis cannot be treated with antibiotics because it is caused by a virus.