Table 2.

ACV-resistant isolates identified in survey, by ACV treatment history and immunologic status

Immune statusTreatment statusNo. of patientsNo. (%) of patients infected with resistant isolates
ImmunocompetentUntreated7083 (0.42)a
ImmunocompetentACV treatedb 1491 (0.67)
ImmunocompromisedACV treated956 (6.3)
ImmunocompetentUnknown9181 (0.11)
  • a These numbers relate to the number of patients shedding ACV-resistant virus. A series of resistant isolates from a single patient were scored only once.

  • b Most patients were receiving episodic treatment.