TAKEAWAY: The sensitivity and specificity of Gram stain for "many" bacteria were 51.3% and 91.0%, respectively, with an accuracy of 76.8%.

First, gram-negative bacteria have a thin cell wall that is about 1.5 to 10 nanometers across, whereas gram-positive bacteria have a thick cell wall measuring about 20 to 80 nanometers.

Salmonella: Salmonella causes the most common foodborne illness deaths. Salmonella live in people and animals’ guts. Fewer than 100 of more than the 2,500 Salmonella types of bacteria cause illness.

Salmonella — a stubborn bacteria known for its spread through contaminated food, water and even pets — is responsible for roughly 1.35 million infections in the U.S. each year. It leads the country in ...

The Biden Administration effort, which had been in development for three years, would have required poultry companies to keep levels of salmonella bacteria under a certain threshold and test for ...

The strain of bacteria called Salmonella enterica —more commonly known as salmonella—causes disease in an estimated 1.2 million people in the U.S. annually, according to the study published today.

One example is infections caused by Salmonella bacteria, which can lead to illnesses such as typhoid fever. For many years, researchers believed that a small subset of dormant bacteria are the ...