Monthly Surveillance Report - Apr 2007

Saturday 21st September 2019


Key Notifiable Disease Trends

  • Cryptosporidiosis: 84 cases of cryptosporidiosis were notified in April 2007 compared to 23 notified cases in the same month of the previous year (Figure 1). Two cases were hospitalised. The highest numbers of cases were reported from Waikato (13), Hutt (11), and Capital and Coast (10) DHBs. Among the cases for whom this information was recorded, 66.7% (14/21) had recreational water contact, 44.8% (13/29) had faecal contact, 39.3% (11/28) had contact with other symptomatic people, 30.8% (4/13) had eaten at a food premise, 30.0% (6/20) had contact with farm animals, 21.7% (5/23) had contact with a confirmed case,  and 16.7% (2/12) had consumed untreated water, and 5.6% (1/18) had contact with sick animals during the incubation period.
  • Dengue: 15 cases of dengue fever were notified in April 2007 compared to zero notified cases in the same month in the previous year (Figure 2). The cases were from Auckland (4), Counties Manukau (3), Waitemata (3), Bay of Plenty (3), and Waikato (2) DHBs. Two cases were hospitalised. Overseas travel was recorded for 14/15 cases. The countries visited were Cook Islands (10), East Timor (1), Samoa (1), and Tahiti (1). The country visited was not recorded for the remaining case known to have overseas travel.
  • Giardiasis: 137 cases of giardiasis were notified in April 2007 compared to 85 notified cases in the same month of the previous year. One case was hospitalised. The highest numbers of cases were reported from Auckland (21), Nelson Marlborough (21), Canterbury (15), Otago (15), and Capital and Coast (11) DHBs. Among the cases for whom this information was recorded, 46.7% (7/15) had faecal contact, 38.5% (5/13) drank from a non-habitual water supply, 28.6% (4/14) had contact with other symptomatic people, 35.7% (5/14) had recreational water contact, 27.3% (3/11) had eaten at a food premise, 23.8% (5/21) had contact with a confirmed case, 25.0% (3/12) had consumed untreated water, 12.5% (2/16) had contact with farm animals, and 11.8% (2/17) had contact with sick animals during the incubation period.
  • Haemophilus influenzae type b: one confirmed case of haemophilus influenzae type b was notified in April 2007 compared to three notified cases in the same month of the previous year. The case was in 1-4 years age group and was hospitalised with epiglottis and septicaemia. The child survived. The case had not been vaccinated against the disease.
  • Legionellosis: six cases of legionellosis were notified in April 2007. The cases were from Auckland (2), Capital and Coast (2), Waitemata (1), and MidCentral (1) DHBs. Four cases were in the 50-59 years age group, and one each in the 30-39 years and 70+ years age groups. The species involved were: Legionella pneumophila serogroup 1 (3), L. pneumophila serogroup 12 (1), L. sainthelensi  serogroup 1 (1), and L. jordanis serogroup 1 (1).
  • Meningococcal disease: based on the earliest date available , three cases of meningococcal disease were notified during April 2007, of which one (33.3%) was laboratory-confirmed.  In comparison, five cases were notified the previous month, March 2007, and eight cases were notified during the same month last year, April 2006. For the 12 month period ending 30 April 2007, Tairawhiti DHB recorded the highest incidence rate of 11.2 per 100 000 population (5 cases), followed by Northland (6.7 per 100 000, 10 cases), and Waikato (6.1 per 100 000, 21 cases). The highest age-specific incidence rate was in infants aged less than one year (52.5 per 100 000 population, 30 cases), followed by those in the 1-4 years age group (11.5 per 100 000 population, 26 cases), and those in the 15-19 years age group (9.0 per 100 000 population, 28 cases).
  • Rubella: one rubella case, still under investigation was notified in April 2007. The case was under one year old and had not been vaccinated against the disease.
  • Shigellosis: 14 cases were notified in April 2007 compared to seven notified cases in the same month in the previous year. The cases were from Lakes (3), Auckland (2), Waikato (2), Bay of Plenty (2), Canterbury (2), Waitemata (1), Counties Manukau (1), and Otago (1) DHBs. The species involved were: Shigella sonnei biotype a (10), S. dysenteriae (1), S. flexneri (1), S. flexneri 2a (1), and S. sonnei biotype g (1). Two cases had been overseas, one to Indonesia and one to Nepal during the incubation period.
  • Tuberculosis disease: 24 cases were notified in April 2007 compared to 10 cases notified in the same month of the previous year. The highest numbers of cases were from Auckland (5), Waitemata (4), and Northland (3) DHBs. The highest number of cases was in the 70+ years age group (7 cases). Two cases were less than 10 years of age. The information on whether the cases were born outside of New Zealand was recorded for 16 cases, of which 12 were born overseas.

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Report:

Monthly Surveillance Report - Apr 2007

Tables:

Monthly National Totals - Apr 2007

Monthly DHB Totals - Apr 2007

Monthly Rolling Totals - Apr 2007

 

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Monthly Surveillance Report - Apr 2007

Tables:

Monthly National Totals - Apr 2007

Monthly DHB Totals - Apr 2007

Monthly Rolling Totals - Apr 2007

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