Lecture 8 Flashcards
how can diseases be classified?
infectious agent - aetiology
modes of transmission
clinical signs
duration of disease
extent of infection
classification of aetiology
presumed cause
herpes virus infections
retroviral infection s
etc
classification of mode of transmission
contagious - direct/indirect
non-contagious - toxins/vector borne disease/ prions
soil related (tetanus, botulism, anthrax)
food borne
vector-bourne
airbourne
duration of parachute disease
few hours up to 1 day
acute duration
1-7 days
subacute duration
1-3 weeksch
chronic infection
> 3 weeks
stage of infection
incubation –> generalisation –> organ specific manifestation
definition of incubation period
period between exposure and onset of clinical symptoms
generalisation peroid
changes in bodys vital signs (fever, tachycardia, tachypnea)
fatigue and weakness
swollen and painful LN
changed heart sounds
loss of appetite
depressoinrga
organ specific manifestation
specific symptoms and their localisation in the period of illness provide diagnostic information
clinical stages of infectious disease
latent period (incubation)
clinical manifestation
- prodromal period (1st nonspecific signs)
- period of illness
- period of decline (attenuation of clinical manifestations)
- period of convalscence (complete recovery)
clinical manifestation of chronic infectious disease
long and slow development
cachexia
weakness
granuloma
classification of infectious diseases
aetiology
duration of the disease
duration and symptoms of the disease
clinical manifestations of infectious diseases according to organ systems
acute infectious diseases
septicaemia
- rapid development (peracute) -death
exanthematous diseases
- epitheliotropic viruses
localised infectious disease
- infectious keratoinjuncivitis, strangles
generaliinfectious diseases with organ-specific manifestation
- contagious agalactia goats
malignant oedema and enterotoxamiea (clostridia)
- peracute, ocal myositisi
infectious diseases of CNS
- rabies (acute), aujesky’s (peracute)
chronic infectious disease
specific inflammation
- TB, glanders, actinomycosis
non-specific inflammation
- brucella
mycoses]- dermatomycoses
mycotoxicoses
tumours
