If someone has an active measles infection, with regard to the chain of infection, what is the term used to describe them?

Measles virus infection is presumed to be sustained through an unbroken chain ofhuman-to-human transmission. So the term I would use is Human Reservoirs  because many common infectious diseases have human reservoirs. Diseases that are transmitted from person to person without intermediaries . And measles is an example of Human reservoirs.  

Telling them to either contract or relax

10/10 recommend bring pads/tampons with you no matter what. im 16 & i’ve had mine since i was 12 and they’re still it regular, but id suggest using the glow app, many women use it for fertility reasons but i use mine specifically for the period tracking portion and it guesses when your next period will most likely be for the next two months. i dont believe theres any way to delay your period, so id say hope for the best but make sure to bring all of your stuff just incase. have a good cruise!