@birdergirl, the quote from the article that @cookercooker quoted states "Chemotherapy also can damage your immune system by reducing your number of infection-fighting white blood cells. This makes it harder for your body to fight infections."

Everyone has to calculate their own level of risk avoidance. This will differ from person to person depending on the type of chemotherapy, their response to it and possible co-existing health conditions. I also think that doing what brings you joy is important for recovery. For some that may be travel, for others it may be spending time with children and grandchildren, for yet others it is rest and recovery with little contact until after chemotherapy.

Together we support one another on Mayo Clinic Connect to heal and live without judgement.

When on chemotherapy and around others, it is wise to wear a mask. I'm thrilled that you felt well enough to go on such wonderful trips. Was there any concern about health coverage when spending time out of country while on active treatment?