Monthly Surveillance Report - Jan 2007
Tuesday 21st March 2023
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Key Notifible Disease Trends
- Chemical poisoning from
the environment: two cases were notified from chemical poisoning in
January 2007. The first case is confirmed, with asbestos as the
suspected source. The second case is currently under investigation with
no risk factors recorded.
- Creutzfeldt-Jacob disease (CJD): one case of CJD, confirmed through MRI scan was notified in January 2007. The case was a male aged 50-59 years from Waitemata DHB. No cases of variant CJD, the form linked with bovine spongiform encephalopathy, have ever been identified in New Zealand.
- Cysticercosis: one probable case of cysticercosis was notified in January 2007 based on a suggestive CT scan of the head. The case was in the 10-14 years age group and had a history of travel to India.
- Dengue: 10 cases of dengue fever were notified in January 2007 compared to one notified case at the same month in the previous year (Figure 1). The cases were from Counties Manukau (8), Waitemata (1), and West Coast (1) DHBs. One case was hospitalised. Overseas travel was recorded for nine of the 10 cases. The countries visited during the incubation period were the Cook Islands (7), Fiji (1), and Samoa (1).
- Legionellosis: 11
cases of legionellosis were notified in January 2007 compared to three
notified cases at the same month in the previous year. The cases were
from Tairawhiti (5), Waitemata (2), Canterbury (2), Northland (1), and
Counties Manukau (1) DHBs. Three cases were hospitalised.
The cases from Tairawhiti were part of an outbreak and all worked
together at a plant nursery. Environmental tests indicated soil may
contain the organism although testing is ongoing. Internationally,
there have been a number of cases reported in Europe with a common
history of travel to the holiday resort of Phuket, Thailand. A hotel
has been identified as a common exposure. None of the cases notified in
New Zealand in January have been linked to this outbreak.
- Meningococcal disease: based on the earliest date available , seven cases of meningococcal disease were notified during January 2007, of which six (85.7%) were laboratory-confirmed. In comparison, 15 cases were notified the previous month, December 2006, and nine cases were notified during the same month last year, January 2006. For the 12 month period ending 31 January 2007, Waikato DHB recorded the highest incidence rate of 8.5 per 100 000 population (27 cases). The highest age-specific incidence rate was in infants aged less than one year (58.6 per 100 000 population, 32 cases), followed by those in the 1-4 years age group (13.0 per 100 000 population, 28 cases), and those in the 15-19 years age group (11.7 per 100 000 population, 31 cases).
- Mumps: five cases of mumps were notified in January 2007 compared to two notified cases in the same month of the previous year. The cases were reported from Auckland (1), Hawke’s Bay (1), Hutt (1), Capital and Coast (1), and Otago (1) DHBs. The cases were in the following age groups: 1-4 years (3), 10-14 years (1), and 30-39 years (1). Two cases were reported as being immunised (the first case received one dose; the second case’s number of doses is unknown).
- Tetanus: one probable case of tetanus was notified in January 2007. The case was in the 70+ years age group and was not immunised. The suspected source is a leg wound from the garden.
- Typhoid fever: nine
cases of typhoid fever were notified in January 2007 compared to six
notified cases in the same month of the previous year (Figure 2). The
cases were from Counties Manukau (3), Waitemata (2), and one each from
Auckland, MidCentral, Capital and Coast, and Nelson Marlborough DHBs.
Seven cases were hospitalised. The species involved was identified for
eight of the nine cases as: Salmonella Typhi
phage type E1a (6), S. Typhi E7 variant (1), and S. Typhi phage type
Untypable (1). Information on overseas travel was recorded for all
cases, of which six had been overseas. The countries visited were India
(3), Western Samoa (2), and Pakistan (1). The remaining three
cases had no overseas travel.
Note: Click on the document links below to open. These documents are in PDF format. You will need to download the free Adobe Acrobat Reader to view them.
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Ph: +64 4 914 0700 Fax: +64 4 914 0770 Email: survqueries@esr.cri.nz |
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