Which of the following is a false statement?

MP CHO -2019 (Shift-2)

Microbiology

Easy

Appeared in: MP CHO -2019 (Shift-2)

Explanation

This statement is false because malaria is transmitted by the female Anopheles mosquito, not the Aedes aegypti mosquito.
The parasite responsible for malaria belongs to the genus Plasmodium.
The Aedes aegypti mosquito is a known vector for other significant viral diseases, including Dengue, Chikungunya, and Zika fever.

Option A: This is a true statement. Rubella (German measles) is a well-known viral disease caused by the Rubella virus, a togavirus. Therefore, it is not a bacterial disease.
Option B: This is a true statement. Filariasis is a classic example of a parasitic disease caused by nematode worms (helminths) like Wuchereria bancrofti.
Option D: This is a true statement. Typhoid fever is caused by the bacterium Salmonella Typhi and is primarily transmitted through the fecal-oral route via contaminated food and water.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Modes of transmission for common infectious diseases and their specific vectors as background academic context rather than a clinical decision trigger.
Differentiating between disease vectors is critical for nurses in community health to provide targeted health education on prevention. For example, advising bed nets is key for malaria, while advising clean surroundings is key for dengue.
Accurate knowledge of transmission routes helps in implementing appropriate isolation precautions in a hospital setting. A patient with typhoid (fecal-oral) requires contact precautions, whereas a patient with rubella (droplet) requires droplet precautions.
What if? If a community reports a surge in mosquito-borne illnesses, the nurse's first step is to identify the predominant symptoms and time of mosquito bites (day vs. night) to infer the likely vector (Aedes vs. Anopheles) and guide immediate public health alerts and interventions.

How to Approach the Question

First, identify the core task: find the 'false statement'. This means three of the options are true, and one is incorrect.
Second, evaluate each option independently based on your knowledge of communicable diseases.
For Option A, recall the cause of Rubella. Is it viral or bacterial?
For Option B, recall the cause of Filariasis. Is it a parasite, bacterium, or virus?
For Option C, recall the vector for Malaria. Is it the Aedes or another mosquito?
For Option D, recall the transmission route for Typhoid. Is it food/water-borne?

Concept Tested & Keywords

Concept Tested: Modes of transmission for common infectious diseases and their specific vectors.
Stem keywords: Rubella, Filariasis, Malaria, Typhoid, Aedes Aegypti, bacterial disease, parasitic disease
Lead-in keywords: false statement
Negative lead-in flag: The question asks to identify the FALSE statement.

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