3rd week Flashcards
one that can transmitted from one person to another and is caused by an infectious agent that is transmitted from a source or reservoir to a susceptible host.
Communicable disease
is one in which the causative organism or pathogen is carried from one person to another either directly or indirectly.
also called as Infectious
Disease.
COMMUNICABLE DISEASE
TYPES OF
COMMUNICABLE
DISEASES?
• Respiratory Infections
• Arthropod Borne Infections
• Surface Infections
• Sexually Transmitted Disease
by germs - viruses, bacteria or other pathogenic microbes.
Germs that can infect the respiratory system - lungs, throat, airways - can often be spread through mucus and saliva (also known as “respiratory secretions”) expelled when a person coughs, sneezes, talks or laughs. Some of these germs are spread through droplets small enough to remain suspended in the air and travel over long distances.
RESPIRATORY INFECTIONS
types of RESPIRATORY
DISEASES
• Tuberculosis
• Chicken pox
• Measles
• Influenza
• Diphtheria
• Whooping cough
disease primarily affecting the lungs (Pulmonary tuberculosis-most common)
• it also affect all other vital organs
TUBERCULOSIS
Incubation Period of TUBERCULOSIS
• From weeks, months to years depending upon dose of infection & immunity of patient
Mode of Transmission: TUBERCULOSIS
• Droplet infection
• Coughing
TUBERCULOSIS
Signs and Symptoms
• Tiredness
• Loss of appetite
• Loss of weight
• Anemia
• Evening rise in temperature
• Cough for long time
TUBERCULOSIS
Prevention
I. Raising the resistance of the population to the disease by:
i. Good social conditions:
- Satisfactory housing & adequate diet. ii. BCG (Bacille Calmette Guerin) Vaccination:
- After birth
2. Elimination of tuberculosis infection in milk:
- By pasteurization of milk.
• by Varicella-zoster virus
• Occur mainly in Children under
IO years of age.
• Uncommon in adults.
CHICKEN POX
CHICKEN POX
Incubation Period:
• About I4 - I6 days
Mode of Transmission: CHICKEN POX
• Droplet infection
• Freshly contaminated fomites used by patients can transmit disease.
• Virus can cross placental barrier & may affect fetus
CHICKEN POX
Signs and Symptoms
• Fever
• Appearance of rash in the form of crop on trunk, face and limbs.
• Macules (small flat colored spot on skin) appear first and with in 24 hrs. lesions are appear.
• The lesions becomes dry to form scabs.
CHICKEN POX
Prevention
• Use of local antiseptics like chlorhexidine.
• If bacterial infection progress give antibiotics
• Transmission prevented by isolation of patient for 5-7 days.
• Sterilization of all articles used by patient after cure •
• Also called Rubeola
• Occur in children of 3-5 yrs of ages.
MEASLES
MEASLES
Incubation Period:
About 8 to I4 days
MEASLES
Mode of Transmission:
• Droplet infection
• Direct contact
MEASLES
Signs and Symptoms
Stage I (Catarrhal stage)
- Fever Running nose Cough
Appearance of red spot in mouth Watering of eyes
Stage 2(Stage of eruption)
- Red rash seen at back of ears & foreheads along hairline Rash spread all over body.
MEASLES
Prevention
I. Active immunization:
- By live attenuated measles virus over one year age.
2. Passive immunization:
- By Human normal immunoglobulin.
• Infectious diseases are human illnesses caused by parasites, viruses and bacteria that are transmitted by mosquitoes, sandflies, bugs, blackflies, snails and lice.
ARTHROPOD BORNE INFECTIONS
ARTHROPOD BORNE INFECTIONS Incubation Period:
About 9 to 30 days
ARTHROPOD BORNE INFECTIONS
Mode of Transmission:
- Vector transmission: By bite of female anopheles mosquito
- Direct transmission: By injections of infected blood or plasma
- Congenital: Infected mother to newborn
ARTHROPOD BORNE INFECTIONS
Signs and Symptoms
I. Cold Stage
- Onset of Fever with chills and sensation of extreme cold.
2. Hot Stage
- Temperature rise up to I06
- Intense headache.
3. Sweating stage:
- Fever decreases with sweating•