Stages of Infection

• Stages of Infection: Mnemonic - IPACR
• Stages of Infection: IPACR

  1. Incubation
  2. Prodromal
  3. Acute
  4. Convalescence
  5. Resolution 
• Incubation Period


  Entry of organism until first signs and symptoms appear
• Incubation Period

  s/sx: Asymptomatic
• Prodromal Period


  Nonspecific signs and symptoms e.g. fever, diarrhea, cough etc
• Prodromal Period


  “Alam mo na may sakit siya pero hindi mo alam ang sakin" e.g. flu-like s/sx, rashes
• NOTE: 5th diseases or (Parvovirus B19) is ONLY contagious during prodromal period
• Acute Period


  Specific signs and symptoms; majority of pathognomonic sign
• Acute Period

  e.g. Rabies: Hydrophobia; Dengue: Petechiae, Herman’s sign - flushed skin; Leprosy “ketong”: Leonine appearance
• Convalescence Period


  Recovery with symptoms
• Resolution Period


  Healthy; NO symptoms