Infectious Diseases Practice Questions

Q: Identify the logo?

Leprosy. ***Leprosy*** - This logo, often featuring a stylized flower or protective shape, is widely recognized as a symbol associated with **leprosy awareness** and efforts to eradicate the disease. - Organizations dedicated to **leprosy elimination** and care frequently use similar designs to represent compassion, hope, and the journey towards healing for individuals affected by this condition. *TB* - The emblem for **tuberculosis (TB)** awareness predominantly features a **red ribbon**, which symbolizes solidarity in the fight against the disease. - While TB is a global health concern, its associated imagery differs significantly from the flower-like logo presented. *Malaria* - The international symbol for **malaria** often incorporates a stylized **mosquito** or images representing its lifecycle and geographic prevalence. - The logo displayed does not resemble any common imagery used in malaria prevention or awareness campaigns. *HIV* - The **red ribbon** is the most universally recognized symbol for **HIV/AIDS** awareness, representing solidarity with people living with HIV and those who have died from AIDS. - This specific logo does not align with the established iconography for HIV/AIDS.

Q: A patient from Bihar is admitted with splenomegaly and clinical features suggestive of leishmaniasis. What is the vector responsible for transmitting this disease?

Phlebotomus. ***Phlebotomus*** - **Phlebotomus** (sandfly), specifically ***Phlebotomus argentipes*** in India, is the principal vector for transmitting **Leishmania donovani** parasites causing **visceral leishmaniasis (kala-azar)**. - Bihar is a highly endemic region for kala-azar in India. - The sandfly transmits the parasite when it takes a blood meal from an infected host and then bites an uninfected individual. *Rat flea* - The **rat flea** (**Xenopsylla cheopis**) is the primary vector for diseases like **bubonic plague** and **murine typhus**, not leishmaniasis. - It transmits bacteria such as *Yersinia pestis* and *Rickettsia typhi*. *Black fly* - **Black flies** (**Simulium species**) are vectors for **onchocerciasis** (river blindness), caused by the parasitic worm *Onchocerca volvulus*. - They transmit the microfilariae when biting humans. *Chrysops fly* - The **Chrysops fly** (deer fly or mango fly) is the vector for **Loa loa filariasis** (African eye worm). - It transmits *Loa loa* eyeworm larvae when it bites humans.

Q: There is an outbreak of buboes in a community. What is the vector responsible for transmitting the causative agent?

Xenopsylla [Rat Flea]. ***Xenopsylla [Rat Flea]*** - The presence of **buboes** is characteristic of the **bubonic plague**, caused by *Yersinia pestis*. - *Xenopsylla cheopis*, the **rat flea**, is the primary **vector** responsible for transmitting *Yersinia pestis* from rodents to humans. *Human flea* - While human fleas (*Pulex irritans*) can bite humans, they are not the primary or most efficient vector for transmitting **bubonic plague**. - Their role in widespread outbreaks is generally considered minor compared to the **rat flea**. *Sand fly* - **Sand flies** are vectors for diseases such as **leishmaniasis** and **sandfly fever**. - They are not associated with the transmission of **bubonic plague** or the formation of **buboes**. *Tsetse fly* - The **tsetse fly** is the vector for **African trypanosomiasis** (sleeping sickness). - This disease presents with fevers, headaches, and neurological symptoms, not **buboes**.

Q: In all the following places, hand rub can be used according to standard hand hygiene protocol, except...

If the hands are visibly soiled. ***If the hands are visibly soiled*** - **Hand rub (alcohol-based hand rub)** is ineffective at removing gross contamination and organic matter from visibly soiled hands. - In such cases, **hand washing with soap and water** is mandatory to physically remove dirt, debris, and microorganisms. *While moving from a contaminated site to a clean site during patient care* - **Hand rub** is appropriate in this scenario to prevent the transfer of microorganisms from a potentially contaminated body site or object to another, cleaner area of the patient. - This is part of the "5 Moments for Hand Hygiene" to ensure **patient safety** and prevent **cross-contamination**. *During direct patient contact* - **Hand rub** can be used before and after direct patient contact if hands are not visibly soiled, as it provides rapid and effective decontamination. - This practice is crucial for minimizing the transmission of **healthcare-associated infections**. *Before donning gloves* - **Hand rub** should be performed before donning gloves, especially when performing procedures that involve contact with mucous membranes, non-intact skin, or sterile sites. - This ensures that hands are clean underneath the gloves, providing an additional layer of **infection prevention**.

Q: SAFE strategy for trachoma includes all except?

Evaluation of control program. ***Evaluation of control program*** - **Evaluation** is a monitoring and assessment process used to measure the effectiveness of the SAFE strategy, but it is **not one of the four intervention components** of the strategy itself. - The SAFE strategy consists of: **S**urgery, **A**ntibiotics, **F**acial cleanliness, and **E**nvironmental improvement. *Surgery for trichiasis* - **Trichiasis** (in-turned eyelashes) is a blinding complication of trachoma requiring **surgical correction** to prevent corneal damage. - This is the "S" component of SAFE. *Antibiotics* - **Mass drug administration** with **azithromycin** (single oral dose) is used to reduce the community reservoir of *Chlamydia trachomatis*. - This is the "A" component of SAFE. *Facial cleanliness* - Promoting **facial hygiene**, especially in children, prevents transmission of *Chlamydia trachomatis* through contact and fly vectors. - This is the "F" component of SAFE. *Environmental improvement (Not listed as an option but part of SAFE)* - Improving **water supply**, **sanitation**, and **waste management** reduces breeding sites for flies and improves hygiene. - This is the "E" component of SAFE.

Q: What is the minimum percentage of partner notification required for effective STI control according to NACO guidelines?

80%. ***80%*** - NACO guidelines emphasize that a **minimum of 80% partner notification** is required for effective control of sexually transmitted infections (STIs). - Achieving this threshold helps in **breaking the chain of transmission** by identifying and treating exposed individuals. *95%* - While 95% is an aspirational target for some public health interventions, it is not the **minimum required percentage** specifically stated by NACO for effective STI partner notification. - This level of notification would provide even greater control but is often difficult to achieve in practice. *65%* - A 65% partner notification rate is considered **insufficient** by NACO guidelines to effectively control STI transmission within a population. - This rate would likely lead to a significant number of **untreated partners**, allowing the infection to continue spreading. *50%* - A 50% partner notification rate is **far below** the recommended minimum by NACO, making it largely ineffective for STI control. - Such a low rate would result in a substantial number of **missed cases** and ongoing transmission.

Question 1

Identify the logo?

Accepted Answer

Leprosy

Answer

TB

Answer

Malaria

Answer

HIV

Question 2

A patient from Bihar is admitted with splenomegaly and clinical features suggestive of leishmaniasis. What is the vector responsible for transmitting this disease?

Accepted Answer

Phlebotomus

Answer

Rat flea

Answer

Black fly

Answer

Chrysops fly

Question 3

There is an outbreak of buboes in a community. What is the vector responsible for transmitting the causative agent?

Accepted Answer

Xenopsylla [Rat Flea]

Answer

Human flea

Answer

Sand fly

Answer

Tsetse fly

Question 4

Which of the following indicators can help determine whether the health system is effective at identifying leprosy cases early in the community?

Accepted Answer

Proportion of newly diagnosed patients with grade 2 disability

Answer

Annual new case detection rate per lac

Answer

Treatment initiation rate

Answer

Treatment completion rate

Question 5

Which of the following is the true statement regarding measures to prevent typhoid transmission in the community?

Accepted Answer

Hygiene practice and clean sanitation control are more important than the typhoid vaccine.

Answer

Typhoid vaccine administration is the best method of preventing transmission.

Answer

Person-to-person transmission is the primary mode of spread.

Answer

Drug resistance in typhoid is not as big a problem as in TB.

Question 6

In all the following places, hand rub can be used according to standard hand hygiene protocol, except...

Accepted Answer

If the hands are visibly soiled

Answer

While moving from a contaminated site to a clean site during patient care

Answer

During direct patient contact

Answer

Before donning gloves

Question 7

A person is bitten by a dog. The dog and the person are fully immunized. There is a small abrasion mark on the site of bite. What would you advise to the person?

Accepted Answer

Observation

Answer

Amoxiclav

Answer

Metronidazole

Answer

Ciprofloxacin

Question 8

SAFE strategy for trachoma includes all except?

Accepted Answer

Evaluation of control program

Answer

Antibiotics

Answer

Surgery for trichiasis

Answer

Facial cleanliness

Question 9

A 19-year-old woman presents for STI screening. She is asymptomatic but reports multiple sexual partners. Which of the following screening tests should be performed according to current guidelines?

Accepted Answer

Chlamydia and gonorrhea NAAT, HIV testing, and syphilis serology

Answer

HPV DNA testing

Answer

Chlamydia PCR only

Answer

Syphilis serology only

Answer

HIV testing only

Question 10

What is the minimum percentage of partner notification required for effective STI control according to NACO guidelines?

Accepted Answer

80%

Answer

95%

Answer

65%

Answer

50%

Infectious Diseases — MCQs

Infectious Diseases — MCQs

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