EBK MICROBIOLOGY:W/DISEASES BY BODY...-
EBK MICROBIOLOGY:W/DISEASES BY BODY...-
5th Edition
ISBN: 9780134608242
Author: BAUMAN
Publisher: PEARSON
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Chapter 20, Problem 7CT
Summary Introduction

To answer:

The possible explanations for the lack of documented cases of in-flight transmission of Neisseria meningitidis.

Introduction:

Neisseria meningitidis, or meningococcus is a round Gram-negative bacterium that is responsible for meningitis. The brain and spinal cord are covered by protective membranes that are called meninges. The acute inflammation of meninges is referred to as meningitis. Fever and headache are the common symptoms. Meningococcal bacteria spread from people to people through respiratory and throat secretions.

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Mycobacterium tuberculosis is very difficult to stain because of the A) presence of ribosomes in the cytoplasm. B) location of the DNA within the cell. C) large amounts of a waxlike lipids present in its cell wall. D) lack of a cell wall.
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Although Lilly's project was focused on understanding the prevalence of resistance strains of M. tuberculosis in indigenous populations, she also knew that many patients infected with TB do not have an active disease, ie that the bacteria is latent in the infected lungs. M. tuberculosis is transmitted indirectly via air droplets that are inhaled in the large and small airways. In fact, although 30% of individuals exposed to the bacteria will develop an infection, only 5-10% will develop clinical manifestations. This means 20-25% of people exposed to the bacteria will have a latent disease. Although people with latent disease are not infectious and will not transmit the disease to other community members, latent disease is difficult to diagnose. This was really playing on Lilly's mind, thinking about the difficulty of controlling the spread of the bacteria when most infected people were asymptomatic for years and then suddenly developed active disease, which could then spread for weeks…

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EBK MICROBIOLOGY:W/DISEASES BY BODY...-

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