An example of a disease requiring droplet isolation is?

The correct answer is that measles (Rebeola) requires droplet isolation due to how the disease spreads. Measles is transmitted through respiratory droplets when an infected person coughs or sneezes, which can be inhaled by individuals nearby. This method of transmission means that isolation precautions that focus on droplet transmission are necessary to prevent the spread of the virus to others.

Measles also has a high contagion rate, meaning that those who are not immune are very likely to contract the disease if exposed. Therefore, droplet isolation, which includes the use of masks and maintaining a certain distance from others, is crucial in a healthcare setting to control outbreaks.

The other options represent diseases that have different modes of transmission. For example, pertussis is also a droplet infection, but is less commonly referred to in this specific context compared to measles. Scabies is primarily transmitted through direct skin-to-skin contact rather than through droplets, and varicella, while it also requires precautions, is typically categorized under airborne precautions due to smaller droplet particles that can remain suspended in the air longer than those causing measles.