Monthly Surveillance Report - May 2005
Tuesday 21st March 2023
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Key Notifiable Disease Trends
- Cryptosporidiosis: a total of 45 cases of cryptosporidiosis was notified during May 2005 compared to 18 cases notified at the same time last year. Capital and Coast DHB reported the highest number of cases (10).
- Haemophilus influenzae type b disease (Hib): One laboratory-confirmed case of Haemophilus influenzae type b disease was notified in May, bringing the year to date total to three. The case was aged between 1-4 years, of Pacific Peoples ethnicity who had not been vaccinated.
- Influenza: during May (weeks 18 – 21), 424 consultations for influenza-like illness were reported from 78 general practices (on average) in 22 out of 24 health districts. The average weekly consultation rate for May was 34.6 per 100 000 patient population, compared to a rate of 19.1 per 100 000 patient population during the same month last year. New Zealand is currently experiencing an increased incidence of influenza B in children and young adults.
- Malaria: six cases of malaria were notified in May compared to three cases notified at the same time last year. Three cases were reported from Capital and Coast, and one each from Counties Manukau, Waikato, and Nelson-Marlborough DHBs. Overseas travel was recorded for five cases, and one unknown. The countries visited were: South Africa (2), Tanzania, Papua New Guinea, and India (1 each).
- Meningococcal disease: based on earliest date available, 20 cases of meningococcal disease were notified during May 2005, of which 17 (85.0%) were laboratory-confirmed. In comparison, 21 cases were notified the previous month, and 26 cases were notified during May 2004.
- Pertussis: 171 cases of pertussis were notified in May 2005, of whom 28 (16.4%) were laboratory confirmed. Pertussis numbers have decreased from the peak in November 2004 with (613 cases). Canterbury DHB had the highest number of cases (71).
- Salmonellosis: 100 salmonellosis cases notified in May 2005, compared with 81 cases at the same time last year. Auckland and Nelson-Marlborough DHBs had the highest number of cases (12 cases each). For the previous 12 months, Wairarapa DHB had the highest incidence rate of 68.1 per 100 000 population (26 cases), compared to a national rate of 31.6 per 100 000 population.
- Shigellosis: 19 shigellosis cases were notified in May 2005 compared to 12 notified cases during at the same time last year. The ESR Enteric Reference Laboratory received isolates from all the 19 cases. The species involved were: Shigella sonnei Biotype a (11), S. sonnei Biotype g (6), S. flexneri 3a (1), and S. species (1). Overseas travel was recorded for 12 of the cases, of which seven had been overseas during the incubation period. The countries visited were: Samoa (3), Fiji (2), India (1), and Nepal (1).
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Ph: +64 4 914 0700 Fax: +64 4 914 0770 Email: survqueries@esr.cri.nz |
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