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Month: October 2020

Why eating Listeria-contaminated food can be life threatening?

TeachableMedicalNews article 10222020

Teachable moment in classrooms:

  1. cellular basis of life chapter – cytosol
  2. nervous system chapter – location of meninges
  3. immune system chapter – vasodilation during inflammation
  4. immune system chapter – emigration by white blood cells
  5. microbiology – Listeria monocytogenes biology

The news item:  Recently a Listeria outbreak was reported to have started from contaminated mushrooms:

Enoki mushrooms tied to listeria outbreak that killed four people and hospitalized 31, CDC says | CNN

Enoki mushrooms are linked to four deaths and 31 hospitalizations in what the US Centers for Disease Control and Prevention says was a multistate listeria outbreak that is now presumed to be over.

The article stated that Listeria outbreak is caused by a bacterium, and that the symptoms of infection are stiff neck, loss of balance, miscarriage, confusion and fever.

So, Why Do I Care??

Infection by Listeria bacterium is the third leading cause of food borne illness, and it is the most lethal food borne illness by killing about 15 – 20% of the infected individuals.  In the US each year about 1600 people get infected, and 260 die. The victims are the most vulnerable of society: elderly, pregnant women, and immunosuppressed people.

Plain English, Please!!!

First, let’s talk about what Listeria is. Listeria is a type of bacterium that infects human beings when they consume Listeria-contaminated food. The bacterium lives

How does a new antibiotic called Xenleta fight bacterial infections?

TeachableMedicalNews article 10092020

Teachable moment in classrooms:

  1. chemical basis of life chapter – proteins are made of amino acids linked by peptide bonds
  2. cellular basis of life chapter – protein synthesis on ribosome
  3. respiratory system chapter – alveoli location and function
  4. immune system chapter – events during inflammation
  5. microbiology – bacterial resistance against antibiotics

The news item:  Recently the news of a novel antibiotic was reported:

FDA approves new antibiotic for bacterial pneumonia

A new antibiotic has been approved by the Food and Drug Administration. It’s called Xenleta and the FDA says it’s another treatment option to fight a common type of pneumonia.

The article states that the new antibiotic, Xenleta, is a pleuromutilin, and it fights community acquired bacterial pneumonia.

So, Why Do I Care??

Pneumonia is the reason for 1 million hospitalizations and 50,000 deaths each year in the US. Most pneumonia cases are caused by bacterial infections. Because this disease can get worse quickly, efficient treatment must include the killing of the bacteria that cause the disease. Any new antibiotic that can treat people whose pneumonia resists the regular antibiotics likely to save thousands of lives each year.

Plain English, Please!!!

First, let’s talk about what bacterial pneumonia is. When the deepest portion of our respiratory system, the alveoli (air sacks), are attacked by bacteria, the result is local

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