Explanation:
Nitrile gloves are used in emergency situations when a patients (or the users) allergy status hasn't been made known. They are very durable and puncture resistant, making them a great choice for use by healthcare professionals.
A primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak
<h3>What is antigenic drift?</h3>
Antigenic drift is a phenomenon that causes small changes or mutations in the genes of influenza viruses leading to changes in their surface proteins of the virus, which are HA (hemagglutinin) and NA (neuraminidase).
For this reason, new influenza vaccines are produced yearly to alter the effects that may emerge as a result.
Thus, a primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak
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The morphological characteristics of typhoid bacteria include rod-shaped and Gram-negative.
<h3>What is the typhoid bacterium?</h3>
<em>Salmonella </em>Typhi bacterium is the pathogen that causes typhoid fever, which is a disease characterized by headaches and loss of appetite.
This bacteria (Salmonella) is rod-shaped and Gram-negative, which means that it does not retain crystal violet during Gram staining.
In conclusion, the morphological characteristics of typhoid bacteria include rod-shaped and Gram-negative.
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