Types of Reservoirs

Types of Reservoirs (HAE)

Human Reservoirs

1. Transmission of Diseases

• Diseases transmitted person to person without intermediaries include (SMMSR):

  • Sexually transmitted diseases

  • Measles

  • Mumps

  • Streptococcal infections

  • Respiratory pathogens

2. Types of Carriers (AICC)

• Asymptomatic or healthy carriers: Infected individuals who show no symptoms.

• Incubatory carriers: Can transmit the agent during the incubation period before clinical signs appear.

• Convalescent carriers: Individuals who have recovered but can still transmit the pathogen.

• Chronic carriers: Persistent harboring of pathogens (e.g., Hepatitis B virus, Salmonella typhi).

Animal Reservoirs

• Diseases transmitted animal to animal, with humans as incidental hosts.

• Zoonosis: Infectious diseases transmissible under natural conditions from vertebrate animals to humans.

Environmental Reservoirs (PSW)

• Plants, soil, and water serve as reservoirs for infectious agents.