Which of these statements concerning the causative agent of...

Name: Problem 2, Chapter 26: Nester's Microbiology: A Human Perspective
Uploaded: 2021-06-17T02:54:17-08:00
Duration: 2 min 28 s
Channel: Ummatul Choudary
Description: Which of these statements concerning the causative agent of listeriosis is false? a) It can cause meningitis during the first month of life. b) It is a Gram-positive rod that can grow in refrigerated food. c) It is usually transmitted by the respiratory route. d) Infection can result in bacteremia. e) It is widespread in natural waters and vegetation.

Which of these statements concerning the causative agent of listeriosis is false? a) It can cause meningitis during the first month of life. b) It is a Gram-positive rod that can grow in refrigerated food. c) It is usually transmitted by the respiratory route. d) Infection can result in bacteremia. e) It is widespread in natural waters and vegetation.

Which of these statements concerning the causative agent of listeriosis is false?
a) It can cause meningitis during the first month of life.
b) It is a Gram-positive rod that can grow in refrigerated food.
c) It is usually transmitted by the respiratory route.
d) Infection can result in bacteremia.
e) It is widespread in natural waters and vegetation.

Key Concepts

Neonatal Infection (Meningitis)

In neonates, particularly during the first month of life, Listeria monocytogenes can cross the placental barrier or be acquired during birth, resulting in serious clinical conditions such as meningitis. This risk underscores the importance of monitoring and managing infections in pregnant women and newborns.

Growth in Refrigerated Environments

One of the distinctive features of Listeria monocytogenes is its capacity to grow at refrigeration temperatures. This ability makes contaminated refrigerated foods a significant risk factor for listeriosis, emphasizing the importance of proper food safety practices.

Transmission Routes

The primary mode of transmission for Listeria monocytogenes is through the ingestion of contaminated food, not through the respiratory route. Understanding this foodborne transmission route is crucial in preventing and controlling listeriosis outbreaks, as respiratory transmission is not characteristic of this pathogen.

Listeriosis

Listeriosis is an infectious disease caused by the bacterium Listeria monocytogenes, which predominantly affects pregnant women, neonates, the elderly, and immunocompromised individuals. The disease can manifest in several forms, including meningitis and bacteremia, highlighting its potential severity.

Gram-Positive Rod Characteristics

Listeria monocytogenes is classified as a Gram-positive rod, a structural attribute that contributes to its identification and influences its behavior in various environments, including its ability to thrive at low temperatures.

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