Fig. 2
From: Effects of vaccine registration on disease prophylaxis: a systematic review
Word Cloud. Bibliometric analysis, with the RStudio through the Biliometrix, of the 1828 works published with the search string (“Vaccination” AND “Mobile Applications” OR “Health Smarts Cards” OR “Immunization Programs” OR “Vaccination Coverage” OR “International Certificate of Vaccination” AND “Prophylaxis”), in title/abstract/words-keys, on xxx, march 2022, with a minimum co-occurrence of terms of 20 times [14]