you have to be proactive and get your vaccinations up-to-date.
The CDC recommends that "Adults 19 years of age and older who didn't get Tdap as a preteen or teen should get one dose of Tdap. Getting vaccinated with Tdap at least two weeks before coming into close contact with an infant is especially important for families with and caregivers of new infants.
I went to my health care provider and got all my updates on immunizations. I am now current with my Tdap (tetanus, diptheria, and pertussis -or whooping cough) along giving me a polio shot and some pills for typhoid so I could do international travel.
My arms are nice and sore where they shot me with those little vaccinated microbes, but it will be worth the pain once I get to hold that little critter in my arms.