Malaria
Blackwater fever is a special manifestation of malaria caused by:
Treatment at a glance
- Uncomplicated falciparum: artemether–lumefantrine for 3 days
- Severe malaria: IV artesunate, then a full ACT course
What our notes say
- Blackwater fever is a special manifestation of malaria caused by: (Junior Clerkship in Internal Medicine (MBIM4100) main exam, Paper One: 31 Januar)
- Deep acidotic breathing is the commonest severe feature in children, along with cerebral malaria and severe anaemia. (Paediatrics Senior Clerkship end of 2nd semester exam: 4 October 2021, 50 MCQs)
- The following are true of Plasmodium falciparum malaria EXCEPT: (Paediatrics Year 6 MBChB end of semester CAT: clinical case MCQs, 29 of 30 quest)
- Hyperglycaemia is one of the features that characterise severe malaria (Paediatrics Year 6 MBChB end of semester CAT: clinical case MCQs, 29 of 30 quest)
- Infection screening: HIV, syphilis, hepatitis B and malaria prevention, with immunisation (rubella, tetanus). (Reproductive Health 1 End of Trimester CAT: November 2018)
- Detects and treats conditions such as anaemia, hypertension, malaria, syphilis and HIV early. (Reproductive Health 1 End of Trimester CAT: November 2018)
Study material on Malaria
- Malaria
- Medical Entomology Questions
- Department Of Medical Microbiology & Parasit.. MCQs
- Paediatrics Year 6 MBChB end of semester CAT: clinical case MCQs, 29 of 30 questions
- MASTER PHARMACOLOGY NOTES
- Principles of Medical Microbiology and Parasitology LAQs & SAQs
- Junior Clerkship in Reproductive Health (MBOG 4200): end of year examination, 4 July 2019
- Epidemiology Case Study MCQs
- Antenatal care
- Pharmco Notes
- Molecular Biology Exam Review MCQs
- MICROBIOLOGY AND PARASITOLOGY MCQs
- Weekly Year 2: Parasitology Exam - May 29, 2026 (Section A: MCQs)
- Weekly Year 2: Parasitology Exam - May 15, 2026 (Section A: MCQs)
Practice questions on Malaria
In a population, 4% have sickle cell anemia. What percentage is heterozygous (advantageous to malaria)?
- 16%
- 4%
- 8%
- 2%
- 32%
Answer: E. If q² = 0.04, then q = 0.2 and p = 0.8. Heterozygous frequency = 2pq = 2(0.8)(0.2) = 0.32 or 32%. ---
In a certain group of African people, 4 percent are born with sickle cell anemia. What percentage of the group has the selective advantage of being more resistant to malaria than those individuals who are homozygous for normal hemoglobin or for sickle cell anemia?
- 16%
- 32%
- 2%
- 4%
Answer: B. If 4% have sickle cell anemia (ss), then q² = 0.04, so q = 0.2 and p = 0.8. Heterozygotes (Ss) have malaria resistance: 2pq = 2(0.8)(0.2) = 0.32 = 32%. ---
Hemoglobin variant protecting against severe malaria?
- HbS
- HbC
- HbE
- HbD
- HbF Answer:
Answer: A. Sickle trait carriers have reduced risk of severe P. falciparum malaria.* ---
The best mode of malaria control is
- Elimination of insect eggs
- Bed net use
- Prompt treatment
- Integrated vector management
- All of the above
Answer: D. Integrated vector management combines multiple control strategies (bed nets, treatment, environmental management, etc.) and is considered the most effective approach for sustainable malaria control. ---
The best mode of malaria control is?
- Elimination of insect eggs
- Bed net use
- Prompt treatment
- Integrated vector management
- All of the above
Answer: C. Integrated Vector Management (IVM) is the best approach as it combines multiple control strategies: larval control, insecticide-treated bed nets, indoor residual spraying, environmental management, biological control, and case management. While bed nets, prompt treatment, and larval control are all important, IVM's comprehensive multi-intervention approach is most effective for sustainable malaria control. Single int
Which hemoglobin variant protects against severe malaria?
- HbS
- HbC
- HbE
- HbD
- HbF
Answer: A. Sickle cell trait (HbAS) impairs parasite survival inside RBCs, conferring protection against severe P. falciparum malaria. ---