What is the most appropriate recommendation for administering tdap to pregnant patients?

The whooping cough vaccine is harmless for the patient and the baby. Doctors and midwives who major in in caring for pregnant women approve that it is significant to be acquired throughout the third trimester of pregnancy. Adults who are 19 years old and older must only acquire one dosage of the Tdap vaccine.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.