Answer to Paredes et al. commenting on COVID-19 vaccines under the International Health Regulations - We must use the WHO International Certificate of Vaccination or Prophylaxis"."
Seif Al Abri, Daniel Lucey, Lucille Blumberg, Laura D. Kramer, Tatiana de Castro Abreu Pinto, Christina W. Obiero, Alfonso J. Rodriguez-Morales, Aisha Abubakar, Paul Anantharajah Tambyah, Allison Holmes, Shui Shan Lee, Lin H. Chen, Eskild Petersen, Richard Yapi
International Journal of Infectious Diseases