Looks like this is the list of signatories, including doctors, immunologists, virologists, and researchers. Here’s an excerpt showing the Church officials who are the initial signatories:
Mgr. Carlo Maria Viganò, Archbishop, Apostolic Nuncio
Cdl Robert Sarah, Prefect of the Congregation for Divine Worship
Cdl Gerhard Ludwig Mueller, Prefect emeritus of Congregation of the Doctrine of the Faith
Cdl Joseph Zen Ze-kiun, Bishop emeritus of Hong Kong
Cdl Janis Pujats, Archbishop emeritus of Riga
Mgr Luigi Negri, Archbishop emeritus of Ferrara-Comacchio Mgr Joseph Strickland, Bishop of Tyler, Texas
Mgr Thomas Peta, Metropolitan Archbishop of Astana
Mgr Athanasius Schneider, Auxiliary Bishop of Astana
Mgr Jan Pawel Lenga, Archbishop emeritus of Karaganda
Mgr Rene Henry Gracida, Bishop emeritus of Corpus Christi
Looks like this is the list of signatories, including doctors, immunologists, virologists, and researchers. Here’s an excerpt showing the Church officials who are the initial signatories: