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—The case reported by Dr Brandstetter and his colleagues in their letter further supports the supposition that in S aureus endocarditis among drug addicts, the source of infection is probably the addicts themselves. The easy spread of S aureus to colonize other persons' nasopharynges makes the human-tohuman transmission of S aureus endocarditis a strong possibility in the addict population.
We agree with the statement by Dr Brandstetter and associates that the use of sterile IV techniques probably will not reduce the risk of frequency of S aureus endocarditis among addicts.
Scalcini MC, Sanders CV. Human-to-Human Transmission of Staphylococcus aureus Endocarditis-Reply. Arch Intern Med. 1981;141(4):546. doi:10.1001/archinte.1981.00340040142040