Communicable Diseases Flashcards
(47 cards)
Infectious diseases
illness caused by specific microorganism
Communicable disease
infectious disease transmitted from one person to another
endemic
diseaes with a relatively high but constant rates of infections in a particular population
epidemic
the number of new infections exceeds the normal number of infections
pandemic
an epidemic that spreads across continents or world wide
Portal of exit
how pathogenic agent leaves infected host to invade another: genitourinary tract GI tract resp tract skin (open wounds)
Modes of transmission
direct contact
indirect contact
food or waterorne
airborne
susceptibility to communicable diseases
age genreal health status immune status cultural behaviours sexual behaviours enviornmental and geographical conditions
nosocomical infections
people who arrive at hospital catch infections they did not have prior to admission due to the large amount of bacteria and infections in a hospital
MRSA
methicillin resistant staphylococcus aureus infections
resistant to antibiotics
symptoms ot MRSA
redness, swelling, pain, pus, area hot to touch, boils, abscesses, cellulitis
malaise, febrile, rigors, SOB, dizziness secondary to hypotension
Those most at risk of MRSA
people with weak immune systems young children elderly people stayng or working in health care people who spend time in enclossed high population density areas
Meningococcal
bacterial infection leading to sepsis with the causative organism being neuisseria meningitis
signs and symptoms of meningococcal
neck stiffness/joint pain altered conscious state headache photophobia febrile N+V tachypnoea tachycardia hypotension purpuric rash
Paramedic Management of Meningococcal
PPE
Ceftriaxone
notify recieving hospital
notify DTM for follow up of possible staff exposure
HIV/AIDS
causes AIDS
progressive deficiency of immune cells, activation and immune response
Transmission of HIV
blood and bodily fluids sex placenta/breast milk direct contact with infeted body fluid or blood blood transfusion transplanted tissues and organs needle stick injuries
Risk factors of HIV
high sexual behaviour
IV drug use
blood or blood product transfusion
infants born to HIV positive mother
HIV attacks vital immune cells:
CD4 cells
helper T cells
macrophages
dendritic cells
HIV to AIDs
on entry to cell the RNA is converted into double stranded DNA by the viruses reverse transcriptase enzyme
the enzyme integrase incorporates the viral DNA into the permanent makeup of the host cell
Signs and symptoms of HIV
elevated viral load
acute infection - fever, rash, malaise, oesophageal abrasians and lesions
latency
AIDS
when CD4 cell numbers reach a critically low level and CMI is completely depleted
opportunistic infections ensue: resp compromise, rashes, ulcerations, tuberculosis, pneumonia
Influenza
a virus that has a segmented genome
can interact with other influenza viruses when a single person is co-infected with both types of viruses
Signs and symptoms of flu
fever, cough, congestion, aches, fatigue, headache, nausea and vomiting