Monthly Surveillance Report - May 2007

Thursday 19th September 2019


Key Notifiable Disease Trends

  • Cryptosporidiosis: 86 cases of cryptosporidiosis were notified in May 2007 compared to 34 notified cases in the same month of the previous year (Figure 1). Three cases were hospitalised. The highest numbers of cases were reported from Waikato (19), Waitemata (12), and Auckland (10) DHBs. Among the cases for whom this information was recorded, 75.0% (21/28) had faecal contact, 60.7% (17/28) had contact with other symptomatic people, 53.1% (17/32) had contact with farm animals, 50.0% (9/18) had eaten at a food premise, 48.3% (14/29) had recreational water contact, 26.3% (5/19) had consumed untreated water, 18.8% (3/16) had consumed non-habitual water supply, 16.7% (4/24) had contact with sick animals, and 13.8% (4/29) had contact with a confirmed case  during the incubation period.
  • Dengue: 13 cases of dengue fever were notified in May 2007 compared to three notified cases in the same month in the previous year (Figure 2). The cases were from Auckland (4), Counties Manukau (3), Waitemata (2), Taranaki (1), Whanganui (1), Nelson-Marlborough (1), and Canterbury (1). Two cases were hospitalised. Overseas travel was recorded for 12 of the 13 cases. The countries visited were Cook Islands (7), Samoa (2), Bali (1), Fiji (1), and Malaysia (1).  Overseas travel was unknown for the remaining case.
  • Hydatid disease: two probable hydatid cases were notified in May 2007. The cases were both from Hawke’s Bay DHB aged 60-69 years and 70+ years.  Both cases had previously lived on a farm and/or been employed as a meat worker.  In both instances their infection is thought to have occurred many years ago.
  • Legionellosis: 11 cases of legionellosis were notified in May 2007, seven confirmed, and four under investigation. The cases were from Waitemata (4), Counties Manukau (2), and one each from Auckland, MidCentral, Wairarapa, West Coast, and Canterbury DHBs. The cases were in the following age groups: 50-59 years (4), 70+ years (3), 30-39 years (2), 5-9 years (1), and 40-49 years (1). The species involved was identified for seven cases: Legionella pneumophila SG 1 (3), L. gormanii SG 1 (1), L. longbeachae SG 1 (1), L. longbeachae SG 1 or 2 (1), and L. sainthelensi SG 1 (1). The remaining four cases are still undergoing laboratory testing to confirm their diagnosis.
  • Leprosy: three cases of leprosy were notified in May 2007. Two cases were probable and one was confirmed. All three cases previously lived in countries where leprosy is known to be endemic; Myanmar, Samoa, and Ethiopia.
  • Meningococcal disease: based on the earliest date available, eight cases of meningococcal disease were notified during May 2007, of which seven (87.5%) were laboratory-confirmed.  In comparison, two cases were notified the previous month, April 2007, and 10 cases were notified during the same month last year, May 2006. For the 12 month period ending 31 May 2007, Tairawhiti DHB recorded the highest incidence rate of 9.0 per 100 000 population (4 cases), followed by Northland (6.7 per 100 000, 10 cases), and Counties Manukau (5.7 per 100 000, 25 cases). The highest age-specific incidence rate was in infants aged less than one year (54.3 per 100 000 population, 31 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 (8.3 per 100 000 population, 26 cases).
  • Shigellosis: 16 cases were notified in May 2007 compared to four notified cases in the same month in the previous year. The cases were from Counties Manukau (4), Canterbury (3), Auckland (2), Waikato (2), Otago (2), Northland (1), Waitemata (1), and Southland (1) DHBs. The species involved was identified for 15 cases:  Shigella sonnei biotype g (5), S. flexneri 2a (4), S. sonnei biotype a (3), S. flexneri biotype 1 (2), and S. flexneri (1), Five cases had been overseas: Nepal (2), India (1), Fiji (1), and to Egypt and Thailand (1) during the incubation period.

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Report:

Monthly Surveillance Report - May 2007

Tables:

Monthly National Totals - May 2007

Monthly DHB Totals - May 2007

Monthly Rolling Totals - May 2007

 

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Monthly Surveillance Report - May 2007

Tables:

Monthly National Totals - May 2007

Monthly DHB Totals - May 2007

Monthly Rolling Totals - May 2007

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