AIM: To determine the proportion of Herpes simplex type 1 vs Herpes simplex type 2, as a cause of anogenital herpes in the Waikato region. We specifically looked for changes in the proportions over time, and for gender or age group associations. METHOD: We undertook a retrospective data-analysis of all anogenital isolates positive for Herpes simplex types 1 or 2 in those greater than and equal to 14 years of age, received at Waikato Hospital Laboratory (Hamilton, New Zealand) over a 10-year period. Around half way through the study period, the test type changed from viral culture to HSV nucleic acid amplification assay. RESULTS: Between 1997 and 2006, 3933 anogenital isolates were positive for either Herpes simplex types 1 or 2. The proportion of type 1 vs type 2 oscillated around 30 to 40% over the 10 years, with no particular trend. Overall, 71% of positive isolates were from females, with 80% of the type 1 isolates from females. Presence of type 1 was inversely proportional to age, accounting for 53% of positive isolates in the <25 year age group, 30% in the 25-35 year group, and 26% in the >35 year group. CONCLUSION: Herpes simplex type 1 is a major contributor to anogenital herpes in the Waikato. Females accounted for the majority of both types and there was a much higher proportion of type 1 seen in the younger age groups. These findings have been reported overseas but this is the first reported New Zealand data.
AIM: To determine the proportion of Herpes simplex type 1 vs Herpes simplex type 2, as a cause of anogenital herpes in the Waikato region. We specifically looked for changes in the proportions over time, and for gender or age group associations. METHOD: We undertook a retrospective data-analysis of all anogenital isolates positive for Herpes simplex types 1 or 2 in those greater than and equal to 14 years of age, received at Waikato Hospital Laboratory (Hamilton, New Zealand) over a 10-year period. Around half way through the study period, the test type changed from viral culture to HSV nucleic acid amplification assay. RESULTS: Between 1997 and 2006, 3933 anogenital isolates were positive for either Herpes simplex types 1 or 2. The proportion of type 1 vs type 2 oscillated around 30 to 40% over the 10 years, with no particular trend. Overall, 71% of positive isolates were from females, with 80% of the type 1 isolates from females. Presence of type 1 was inversely proportional to age, accounting for 53% of positive isolates in the <25 year age group, 30% in the 25-35 year group, and 26% in the >35 year group. CONCLUSION: Herpes simplex type 1 is a major contributor to anogenital herpes in the Waikato. Females accounted for the majority of both types and there was a much higher proportion of type 1 seen in the younger age groups. These findings have been reported overseas but this is the first reported New Zealand data.
Authors: Mark Gilbert; Xuan Li; Martin Petric; Mel Krajden; Judith L Isaac-Renton; Gina Ogilvie; Michael L Rekart Journal: Can J Public Health Date: 2011 May-Jun
Authors: Katharine J Looker; Amalia S Magaret; Katherine M E Turner; Peter Vickerman; Sami L Gottlieb; Lori M Newman Journal: PLoS One Date: 2015-01-21 Impact factor: 3.240
Authors: Katharine J Looker; Amalia S Magaret; Margaret T May; Katherine M E Turner; Peter Vickerman; Sami L Gottlieb; Lori M Newman Journal: PLoS One Date: 2015-10-28 Impact factor: 3.240