UPSC-CMS 2016 Practice Questions

Q: Consider the following statements: Prophylactic disinfection includes 1. disinfection of urine specimen of patient with enteric fever 2. pasteurization of milk 3. disinfection of contaminated linen 4. disinfection of water by chlorine Which of these statements are correct?

2 and 4 only. ***Correct: 2 and 4 only*** - **Prophylactic (preventive) disinfection** is performed on materials that are *potentially* contaminated to prevent disease transmission BEFORE actual contamination occurs - **Pasteurization of milk** and **chlorination of water** are classic examples of prophylactic measures applied to substances before consumption - These are routine public health interventions performed regardless of known contamination *Incorrect: 1 and 3 only* - This incorrectly classifies **disinfection of urine specimens from enteric fever patients** and **disinfection of contaminated linen** as prophylactic measures - Both are examples of **concurrent/terminal disinfection** (performed on materials already known to be contaminated from infected patients) - Misses pasteurization and chlorination which are true prophylactic measures *Incorrect: 1, 2, 3 and 4* - While statements 2 and 4 are correct examples of prophylactic disinfection, statements 1 and 3 are NOT - **Statement 1** (disinfection of urine from enteric fever patient) is **concurrent disinfection** - the patient is already infected, and we're disinfecting their excreta - **Statement 3** (disinfection of contaminated linen) is **concurrent/terminal disinfection** - the linen is already contaminated - Prophylactic measures are preventive; concurrent/terminal measures deal with known contamination *Incorrect: 1, 2 and 4 only* - Incorrectly includes statement 1 (disinfection of urine from infected patient) which is concurrent disinfection, not prophylactic - Also incorrectly excludes statement 3 while the issue is that both 1 and 3 are not prophylactic measures

Q: Consider the following statements: 1. Registration of birth, even if the child is born in a hospital, is essentially the responsibility of parents only. 2. At present, the registration of birth has to be done not more than 15 days after the birth. Which of these statements is/are correct?

Neither 1 nor 2. ***Neither 1 nor 2*** - Statement 1 is incorrect because the responsibility for birth registration in a hospital primarily lies with the **medical officer in charge** or other authorized personnel under Section 12 of the Registration of Births and Deaths Act, 1969, not solely the parents. - Statement 2 is incorrect because the stipulated period for birth registration is **21 days** from birth, not 15 days, according to the Registration of Births and Deaths Act, 1969. *1 only* - This option is incorrect because Statement 1 wrongly places the **sole responsibility** for birth registration on parents, even in a hospital setting. - In a hospital, the **medical officer in charge** or designated staff is primarily responsible for initiating the registration process. *2 only* - This option is incorrect because Statement 2 incorrectly asserts that registration must be done within 15 days; the correct period is **21 days**. - Additionally, Statement 1 is also incorrect regarding the sole responsibility of parents. *Both 1 and 2* - This option is incorrect as both statements contain factual errors regarding the responsibility for birth registration and the prescribed timeline. - The responsibility extends beyond just parents, especially in a hospital setting, and the registration period is **21 days**, not 15 days.

Q: Sullivan Index is the measure of which of the following?

Quality of life. ***Quality of life*** - The **Sullivan index** (also known as disability-free life expectancy) is a health indicator that measures the expected years of life free from disability. - It combines mortality data with data on self-reported disability to assess the **overall health and well-being** of a population. *Pregnancy rate* - This measures the **number of pregnancies** per 1,000 women of reproductive age. - It is a demographic indicator and is **not related** to the Sullivan Index. *Disability rate* - This measures the **prevalence or incidence of disability** within a population at a specific time. - While disability data is used in the Sullivan index calculation, the index itself represents a **health expectancy** (years lived without disability), not just the rate of disability. *Literacy rate* - This measures the **percentage of the population** that can read and write. - It is an **educational and social indicator** and has no direct relation to the Sullivan index.

Q: Consider the following statements: The strategy to eradicate poliomyelitis in India comprised of: 1. Conducting National Immunization Days 2. Mopping up rounds with OPV 3. Acute Flaccid Paralysis surveillance 4. Public awareness through multimedia Which of these statements are correct?

1, 2, 3 and 4. ***1, 2, 3 and 4*** * All four strategies—**National Immunization Days (NIDs)**, **mopping-up rounds with OPV**, **Acute Flaccid Paralysis (AFP) surveillance**, and **public awareness campaigns**—were integral to India's successful polio eradication effort. * These components collectively ensured high vaccination coverage, targeted interventions in high-risk areas, effective case detection, and community engagement, leading to the country being declared polio-free. *1 and 3 only* * This option is incomplete as it omits **mopping-up rounds** and **public awareness**, both of which were crucial for achieving and maintaining high herd immunity and community participation. * While **NIDs** and **AFP surveillance** were foundational, they alone would not have been sufficient for complete eradication without the other critical components. *2 and 4 only* * This option overlooks **National Immunization Days (NIDs)**, which were large-scale, nationwide vaccination campaigns fundamental to delivering OPV to a vast population. * It also omits **Acute Flaccid Paralysis (AFP) surveillance**, which was essential for identifying and investigating all suspected polio cases, allowing for rapid response and containment. *1, 2 and 3 only* * This option does not include **public awareness through multimedia**, which was vital for informing parents about the importance of vaccination, addressing vaccine hesitancy, and mobilizing community support during campaigns. * While **NIDs**, **mopping-up rounds**, and **AFP surveillance** targeted the biological and operational aspects, public awareness was critical for the social and behavioral components of the eradication strategy.

Q: In the estimation of statistical probability, Z score is applicable to:

Normal distribution. ***Normal distribution*** - The **Z-score** (or standard score) is a measure of how many **standard deviations** an element is from the mean. It is specifically used when working with **normally distributed data**. - It allows for the comparison of scores from different normal distributions by standardizing them to a common scale. *Poisson distribution* - This distribution deals with the **number of events** occurring in a fixed interval of time or space, given a known average rate, and is not typically used with Z-scores directly. - It is a **discrete probability distribution**, unlike the continuous nature required for direct Z-score application. *Skewed distribution* - A skewed distribution has an **asymmetrical shape**, where points cluster more on one side of the mean. - Z-scores can be calculated for skewed distributions, but their interpretation as probabilities (e.g., using a standard normal table) is **not valid** because the data do not follow a bell-shaped curve. *Binomial distribution* - This distribution describes the **number of successes** in a fixed number of independent Bernoulli trials. - It is a **discrete probability distribution** and generally, Z-scores are not directly applied to it, although for a large number of trials, it can be approximated by a normal distribution.

Q: Consider the following vectors: 1. Aedes mosquito 2. Flea 3. Ticks 4. Itchmite Transovarian transmission is demonstrated in

1 and 3. ***1 and 3*** - **Aedes mosquito** (*Aedes aegypti*, *Aedes albopictus*) demonstrates well-established transovarian transmission for multiple arboviruses including **dengue**, **Zika**, **chikungunya**, and **yellow fever**. This mechanism allows the virus to persist in mosquito populations even without vertebrate hosts. - **Ticks** (e.g., *Ixodes*, *Dermacentor*, *Amblyomma* species) are classic examples of transovarian transmission, transmitting pathogens like **Rickettsia** (Rocky Mountain spotted fever, tick typhus), **Babesia**, **Crimean-Congo hemorrhagic fever virus**, and **Kyasanur Forest disease virus**. This is a key epidemiological feature distinguishing tick-borne diseases. *2 and 4* - **Fleas** primarily transmit **plague** (*Yersinia pestis*) horizontally through infected flea bites or contaminated feces. While some rickettsiae (*R. typhi*, *R. felis*) can show limited transovarian transmission in fleas, this is not a prominent or classically emphasized feature compared to mosquitoes and ticks. - **Itchmite** (*Sarcoptes scabiei*) causes **scabies** by direct skin infestation and is not a vector for other pathogens. It does not demonstrate transovarian transmission of disease agents. *1 and 2* - While **Aedes mosquitoes** demonstrate prominent transovarian transmission, **fleas** do not typically exhibit this as a major transmission mode for their primary pathogens. *3 and 4* - **Ticks** exhibit transovarian transmission, but **itchmite** is a direct parasite, not a disease vector with transovarian transmission capability.

Q: The most sensitive indicator of the health status of a community is the:

Infant mortality rate. ***Infant mortality rate*** - The **infant mortality rate (IMR)** is widely considered the most sensitive indicator of a community's health status, reflecting the overall living conditions, public health interventions, and access to quality healthcare. - A high IMR often points to underlying issues such as **poor maternal health**, **inadequate nutrition**, **infectious diseases**, and limited access to healthcare. *Crude death rate* - The crude death rate includes all deaths in a population, making it less sensitive to specific health challenges or disparities that affect vulnerable groups. - It can be influenced by the **age structure** of a population; an older population will naturally have a higher crude death rate, even if its healthcare system is excellent. *Maternal mortality rate* - While an important indicator of the health of women and the quality of obstetric care, the maternal mortality rate focuses solely on deaths related to pregnancy and childbirth. - It does not encompass the broader spectrum of health issues affecting the entire population, including children, men, and non-reproductive women. *Child mortality rate* - The child mortality rate (deaths between 1 and 5 years of age) is a valuable indicator, but it is less sensitive than the infant mortality rate. - Many of the factors contributing to child mortality are also reflected in infant mortality, but the neonatal period and early infancy are particularly vulnerable and responsive to public health interventions.

Q: Chemoprophylaxis is an example of:

Specific protection. ***Specific protection*** - **Chemoprophylaxis** involves administering drugs to prevent the development of a specific disease, thus providing **specific protection** against it. - This falls under the level of **primary prevention**, aimed at preventing disease onset. *Early detection* - This refers to identifying a disease at an early stage, such as through **screening programs** like mammography or pap smears. - Chemoprophylaxis aims to prevent the disease from occurring, not to detect it after it has begun. *Health promotion* - This involves promoting good health through general measures like **health education**, **nutritional counseling**, and encouraging physical activity. - While it contributes to overall well-being, it is not a direct, specific disease prevention method like chemoprophylaxis. *Rehabilitation* - This stage of prevention focuses on restoring function and preventing disability after a disease or injury has occurred, such as through **physical therapy** or occupational therapy. - Chemoprophylaxis is implemented *before* the disease manifests, not after.

Q: A rapid mass screening method that can be employed by a paramedical worker for detecting malnutrition in pre-school (age: 1 to 5 years) children is:

Mid-arm circumference. ***Mid-arm circumference*** - **Mid-upper arm circumference (MUAC)** is a simple, quick, and effective anthropometric measure that can be used by paramedical workers for rapid screening of malnutrition in pre-school children. - It is particularly useful in community settings as it requires minimal training and readily available tools, making it ideal for **mass screening** in resource-limited environments. *Body Mass Index* - **Body Mass Index (BMI)** calculation requires both height and weight, which can be more challenging to accurately measure in young, uncooperative children during rapid field screenings. - While useful for assessing nutritional status, BMI charts can be complex, making them less suitable for rapid use by paramedical workers for mass screening. *Height for age* - **Height for age** is a key indicator for assessing **stunting (chronic malnutrition)** but requires accurate measurement of height, which can be difficult in young children, especially infants and toddlers who cannot stand independently. - Its primary use is for long-term monitoring of growth rather than a quick, immediate screening tool for acute malnutrition or overall nutritional status in a rapid mass campaign. *Weight for age* - **Weight for age** is an indicator for determining **underweight**, reflecting both acute and chronic malnutrition, but it requires accurate weighing scales and meticulous recording. - Although it is a standard anthropometric index, its application in rapid mass screening might be limited by the availability of reliable weighing scales and the time required for accurate measurements in a large population.

Q: The most important single determinant of infant mortality is:

Birth weight. ***Birth weight*** - **Low birth weight** (less than 2500 grams) is the single most important predictor of **infant mortality** and morbidity. - Infants with low birth weight are at a significantly higher risk for **respiratory distress syndrome**, infections, and developmental problems. *Interval between births* - While **short birth intervals** (less than 18-24 months) are associated with increased risks for both mother and child, their impact on infant mortality is secondary to birth weight. - Short intervals can lead to **maternal depletion** and prematurity, but birth weight remains the most direct determinant. *Order of birth* - **High birth order** (e.g., 5th child or more) can be associated with increased infant mortality in some contexts, often linked to socioeconomic factors or maternal depletion. - However, it does not have the same direct and powerful statistical correlation with infant survival as birth weight. *Age of the mother* - **Maternal age extremes** (very young or advanced maternal age) are associated with increased risks of adverse pregnancy outcomes, including preterm birth and low birth weight. - The impact of maternal age on infant mortality is largely mediated through its influence on conditions like birth weight, making birth weight the more immediate determinant.

Question 1

Consider the following statements: Prophylactic disinfection includes

1. disinfection of urine specimen of patient with enteric fever 
2. pasteurization of milk 
3. disinfection of contaminated linen 
4. disinfection of water by chlorine Which of these statements are correct?

Accepted Answer

2 and 4 only

Answer

1 and 3 only

Answer

1, 2, 3 and 4

Answer

1, 2 and 4 only

Question 2

Consider the following statements:

1. Registration of birth, even if the child is born in a hospital, is essentially the responsibility of parents only.
2. At present, the registration of birth has to be done not more than 15 days after the birth. Which of these statements is/are correct?

Accepted Answer

Neither 1 nor 2

Answer

2 only

Answer

Both 1 and 2

Answer

1 only

Question 3

Sullivan Index is the measure of which of the following?

Accepted Answer

Quality of life

Answer

Pregnancy rate

Answer

Disability rate

Answer

Literacy rate

Question 4

Consider the following statements: The strategy to eradicate poliomyelitis in India comprised of:

1. Conducting National Immunization Days
2. Mopping up rounds with OPV
3. Acute Flaccid Paralysis surveillance
4. Public awareness through multimedia

Which of these statements are correct?

Accepted Answer

1, 2, 3 and 4

Answer

1 and 3 only

Answer

2 and 4 only

Answer

1, 2 and 3 only

Question 5

In the estimation of statistical probability, Z score is applicable to:

Accepted Answer

Normal distribution

Answer

Poisson distribution

Answer

Skewed distribution

Answer

Binomial distribution

Question 6

Consider the following vectors:

1. Aedes mosquito
2. Flea
3. Ticks
4. Itchmite

Transovarian transmission is demonstrated in

Accepted Answer

1 and 3

Answer

2 and 4

Answer

1 and 2

Answer

3 and 4

Question 7

The most sensitive indicator of the health status of a community is the:

Accepted Answer

Infant mortality rate

Answer

Crude death rate

Answer

Maternal mortality rate

Answer

Child mortality rate

Question 8

Chemoprophylaxis is an example of:

Accepted Answer

Specific protection

Answer

Early detection

Answer

Health promotion

Answer

Rehabilitation

Question 9

A rapid mass screening method that can be employed by a paramedical worker for detecting malnutrition in pre-school (age: 1 to 5 years) children is:

Accepted Answer

Mid-arm circumference

Answer

Body Mass Index

Answer

Height for age

Answer

Weight for age

Question 10

The most important single determinant of infant mortality is:

Accepted Answer

Birth weight

Answer

Interval between births

Answer

Order of birth

Answer

Age of the mother

UPSC-CMS 2016

Community Medicine