Indoor Residual Spraying
Also written as IRS.
Indoor residual spraying is best effective against ENDOPHILIC insect vectors of pathogens
What our notes say
- Indoor residual spraying is best effective against ENDOPHILIC insect vectors of pathogens (Medical Entomology Past Paper MCQs)
- Prevention of malaria: - Insecticide-treated bed nets - Indoor residual spraying - Prophylactic drugs for travellers (Doxycycline, Atovaquone-Proguanil) (MASTER PHARMACOLOGY NOTES)
- Discuss Indoor Residual Spraying (IRS) as a technique for control of vector-borne diseases. (Medical Bacteriology and Entomology Exam 2020/2021 MCQs)
- Indoor Residual Spraying (IRS) involves applying long-lasting insecticides to interior walls and surfaces of houses where disease vectors rest after blood feeding. (Medical Bacteriology and Entomology Exam 2020/2021 MCQs)
- Use: Insecticide-treated nets (ITNs), indoor residual spraying (IRS) (Medical Bacteriology and Entomology MCQs)
- Use: Indoor residual spraying, space spraying for adult mosquito control (Medical Bacteriology and Entomology MCQs)
Study material on Indoor Residual Spraying
- Medical Entomology Past Paper MCQs
- Medical Entomology Questions
- Medical Bacteriology and Entomology Exam 2020/2021 MCQs
- Medical Bacteriology And Parasitology End Year 2024/2025
- Medical Parasitology
- Malaria
- Bacteriology and Entomology Supplementary Exam
- Medical Bacteriology and Entomology MCQs
Practice questions on Indoor Residual Spraying
Indoor residual spraying is BEST effective against insect vectors of pathogens
- Endophagic
- Exophilic
- Endophilic
- All of the above
- Primarily an incidental laboratory finding
Answer: B. Indoor residual spraying (IRS) is most effective against endophilic vectors that rest indoors after blood feeding, where they contact insecticide-treated surfaces. Exophilic vectors rest outdoors and have minimal contact with indoor-applied insecticides. ---
Indoor residual spraying is BEST effective against insects vectors of pathogens.
- Exophagic
- Endophagic
- Exophilic
- Endophilic
- All of the above
Answer: A. Indoor Residual Spraying (IRS) involves applying insecticides to interior walls and surfaces where vectors rest. It is most effective against endophilic insects that prefer to rest indoors after feeding. Exophagic insects feed outdoors, endophagic insects feed indoors but may rest outdoors, and exophilic insects rest outdoors - all reducing IRS effectiveness. Endophilic behavior maximizes contact with treated indoor
Indoor residual spraying is BEST effective against insects vectors of pathogens.
- that rest on treated surfaces
- that have developed resistance to the insecticide
- that bite during the day
- that live in water
Answer: A. Indoor residual spraying (IRS) involves applying insecticides to the interior walls and ceilings of houses. This method is most effective against insect vectors that rest on these treated surfaces after biting or before biting their next host, such as Anopheles mosquitoes that rest indoors after a blood meal.