The Entomological Inoculation Rate (EIR) for malaria is calculated as:
- A Sporozoite rate alone among Anopheles females
- B Number of infected mosquitoes per household per month
- C Man Biting Rate (MBR) × Sporozoite Rate (SR) ✓
- D Parous rate × female Anopheles density per room
Correct answer: C. Man Biting Rate (MBR) × Sporozoite Rate (SR)
Explanation
EIR = Man Biting Rate (MBR) × Sporozoite Rate (SR), where MBR = number of Anopheles bites per person per unit time, and SR = proportion of Anopheles with sporozoites in salivary glands. EIR represents the number of infective mosquito bites a person receives per unit time and is the most direct epidemiological measure of malaria transmission intensity. It integrates both vector density and infectiousness into a single field-applicable metric.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.