Health records, needle books, immunization records, or now the term Vax Passport have been around for ages. Some countries require visitors to get certain shots before entering their country.
see the link it listed immunizations you must have to enter some countries. https://www.who.int/ith/2016-ith-county-list.pdf
Schools have required some vaccines for decades, I can remember lining up in public school and in high school to get my needles.
I was applying for my Green Card to live and work legally in the USA and they required some vaccines but since I was Canadian the doctor figured I had gotten most of them as a Child so he was not concerned.
Under the immigration laws of the United States, a foreign national who applies for an immigrant visa abroad, or who seeks to adjust status to a permanent resident while in the United States, is required to receive vaccinations to prevent the following diseases:
- Tetanus and Diphtheria Toxoids
- Haemophilus influenzae type B
- Hepatitis B
- Any other vaccine-preventable diseases recommended by the Advisory Committee for Immunization Practices
So without a needle book, vaccine record, or vaccine passport, how else would you prove you had these shots before you applied for entry?
I do not think doctors are going to just take your word any more due to rise in diseases that use to be almost unheard of making a come back
Measles is making a come back in some countries , Afghanistan is 7 on the list released from CDC.
Polio cases are high also in Afghanistan.
Vaccine records are important for travel, school, and other places not just because of the issues today,