According to a Data Brief released by the Office of the National Coordinator for Health IT, fax continues to be the most common method for exchanging summary of care records. About 7 in 10 hospitals used email or fax to send and receive health information in 2019 and roughly 70% of hospitals use fax as a means of sending and receiving summary of care records. 
Additionally, a quarter of pharmacists still use fax to process prior authorizations, a 2021 survey by Surescripts found. The survey goes on to state that a majority of prescribers and pharmacists use fax to communicate and collaborate.
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SOURCE etherFAX
