Infection transmits directly from mother to an embryo or fetus or baby is called?

NVS Staff Nurse - 2022

Obstetrics & Gynaecology

Easy

Appeared in: NVS Staff Nurse - 2022

Explanation

Vertical transmission specifically refers to the passage of an infectious agent from a mother to her child.
This can occur before birth (transplacental), during birth (perinatal), or after birth through breastfeeding.
This mode is distinct from horizontal transmission, which occurs between individuals of the same generation.
Classic examples of vertically transmitted infections include HIV, rubella, and syphilis, often screened for during pregnancy.

Option A: Vector-borne transmission requires an intermediate living carrier, such as a mosquito, tick, or flea, to transmit the pathogen. It does not describe direct mother-to-child transfer.
Option B: Inoculation involves the direct introduction of a pathogen into the body, typically through a puncture or break in the skin, like an animal bite or a contaminated needle.
Option D: Droplet transmission involves the spread of infection through respiratory droplets expelled when an infected person coughs, sneezes, or talks. This is a form of horizontal, not vertical, transmission.

Clinical Relevance

Nursing practice connection: Knowing Modes of infectious disease transmission helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Understanding vertical transmission is crucial for antenatal care. Nurses play a key role in screening pregnant women for infections like HIV, Hepatitis B, and syphilis to prevent transmission to the baby.
Nursing interventions to prevent vertical transmission include administering antiretroviral therapy to HIV-positive mothers, providing Hepatitis B vaccine and immunoglobulin to newborns of infected mothers, and treating syphilis with penicillin during pregnancy.
What if? If a mother has active genital herpes lesions at the time of labor, the mode of delivery would likely be changed. A cesarean section is often recommended to prevent the baby from being exposed to the virus in the birth canal, which is a form of intrapartum vertical transmission.

How to Approach the Question

First, identify the key relationship described in the question stem: the transmission of infection from a 'mother' to her 'embryo, fetus, or baby'.
Recognize that this describes a specific parent-to-offspring route.
Evaluate each option based on its definition:
'Vector-borne' involves insects/animals. This does not fit the mother-to-child scenario.
'Inoculation' involves a puncture or wound. This is not the primary mechanism described.
'Droplet' involves respiratory secretions. This is person-to-person but not specific to the mother-child relationship in this context.

Concept Tested & Keywords

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E6 Microbiology Essentials Sastry 4e Part 1 p. 131-133

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) p. 90-92