Monthly Notifiable Disease Surveillance Report - Dec 2010

Monday 23rd September 2019


Key notifiable disease trends

  • Campylobacteriosis: 674 cases of campylobacteriosis were notified in December 2010 compared to 890 cases notified in the same month of the previous year. Five hundred and eighty-seven (87.1%) cases were laboratory-confirmed.  For the 12-month period ending 31 December 2010, the highest cumulative incidence were reported in Taranaki (243.9 per 100 000 population, 264 cases), Hutt Valley (240.4 per 100 000, 343 cases), and South Canterbury (221.4 per 100 000, 123 cases) DHBs compared to a national rate of 170.2 per 100 000.
  • Cryptosporidiosis: 38 cases of cryptosporidiosis were notified in December 2010 compared to 48 cases notified during the same month of the previous year. The highest number of cases was reported in Canterbury DHB (6 cases), followed by South Canterbury (5 cases) and Lakes (4 cases) DHBs. Cases were distributed across age groups under 70 years with the highest number of cases in the 1-4 years age group (8 cases), followed by the 5-9 years and 20-29 years (6 cases each) age groups.  No cases were hospitalised. 
  • Haemophilus influenzae type b: Three cases of Haemophilus influenzae type b were notified in December 2010 (1 confirmed and 2 under investigation) compared to one case in the same month of the previous year. The confirmed case was a female in the less than 1 year age group from Hawke’s Bay DHB who had been immunised. The remaining cases were a male from from Lakes DHB who was aged less than 1 month and therefore not eligible for immunisation, and a female from Bay of Plenty DHB that has been de-notified after further investigation.
  • Hydatid disease: Two laboratory-confirmed cases of hydatid disease were notified in December 2010. One case was a female in South Canterbury DHB and the other was a male in Southland DHB. Both cases were in the 70+ years age group and have a history of past infection.
  • Lead absorption: 20 cases of lead absorption were notified in December 2010 compared to 13 in the same month of the previous year. There were 200 cases notified in 2010 compared to 272 cases in 2009. The highest numbers of cases were reported in Auckland and Otago DHBs (3 cases each). The cases were aged between 15-19 years and 60-69 years with the highest number of cases in the 40-49 years age group (7 cases). Occupation was recorded for 11 cases: painter/decorator (5 cases), boilermaker, chemical plant operator, radiator repair person, manager, sickness beneficiary, and retired (1 case each). Of these, 4 reported occupational exposure to lead. Of the remaining 7 cases, one reported exposure to lead through hobbies (small bore rifle shooting), one was exposed to ayurvedic medicine from India, and one was exposed to rock chemical at a gold mine.
  • Legionellosis: 44 cases of legionellosis were notified in December 2010 (18 confirmed, 7 probable and 19 under investigation) compared to nine in the same month of the previous year. The following section is based on confirmed and probable cases. Seventeen were from Canterbury DHB, and the following DHBs had one case each: Waitemata, Auckland, Counties Manukau, Waikato, Capital and Coast, West Coast, Otago, and Southland. Nine cases occurred in the 70+ and over age group, six each in the 50-59 and 60-69 years age groups, and four in the 30-39 age group. Of the 22 cases (50.0%) where the hospitalisation information was recorded, 21 cases (95.5%) were hospitalised. The Legionella species were identified in eight cases: Legionella jordanis (2 cases), L. longbeachae serogroup 1 (2 cases), L. longbeachae serogroup 1 or 2, L. longbeachae serogroup 2, L. pneumophila serogroup 1 and L. pneumophila serogroup 4 (1 case each).
  • Leprosy: One confirmed case of leprosy was notified in December 2010. The acid-fast status was recorded as multibacillary. The case had been in Samoa during the incubation period.
  • Meningococcal disease: Based on the earliest date available1, four cases of meningococcal disease were notified during December 2010, three (75.0%) of which were laboratory-confirmed.  In comparison, nine cases (8 laboratory-confirmed) were notified in the previous month and nine (eight laboratory-confirmed) during the same month last year. For the 12-month period ending 31 December 2010, the highest incidence rate was reported in Hutt Valley DHB (5.6 per 100 000, 8 cases), Northland (4.5 per 100 000 population, 7 cases), Hawke’s Bay (4.5 per 100 000, 7 cases) and Southland (4.5 per 100 000, 5 cases) DHBs.  The highest age-specific rate was in infants aged less than one year (42.8 per 100 000 population, 27 cases), followed by those in the 1-4 years age group (9.5 per 100 000, 23 cases).
  • Rheumatic fever: 14 cases of rheumatic fever (all initial attacks) were notified in December 2010 compared to 18 notified in the previous month and seven cases notified in the same month of the previous year.  The cases were distributed by DHB as follows: Counties Manukau (6 cases), Capital and Coast (3 cases), Northland, Auckland, MidCentral, Hutt Valley, and Canterbury (1 case each). All 14 cases were hospitalised.  Eleven (78.6%) cases were aged less than 15 years; five cases in the 5-9 years and six cases in the 6-14 years age groups. Ethnicity was recorded for all cases: Pacific Peoples (8 cases), Maori (5 cases), and European (1 case). Six cases (42.9%) were recorded as of Samoan origin.  The Jones criteria was recorded in nine cases, of which eight (88.9%) had a laboratory-confirmed diagnosis for streptococcal infection. Four of the cases recorded an onset date in November 2010.
  • Salmonellosis: 84 cases of salmonellosis were notified in December 2010 compared to 101 notified in the previous month and 88 cases the same month of the previous year. There were 67 (79.8%) laboratory-confirmed cases. Canterbury and Otago DHBs reported the highest number of cases (12 each), followed by Waitemata (9 cases), Auckland (7 cases) and Hawke's Bay (7 cases) DHBs. Salmonellosis occurred in all age groups, with the highest numbers of cases in the 20-29 years (14 cases), 1-4 years (11 cases), 30-39 years (10 cases) age groups. Of the 46 cases with hospitalisation information, eight were hospitalised. The serotype involved was identified in 50 of the cases, and most prevalent serotypes were Salmonella Typhimurium  phage type 160 (9 cases), S. Infantis (4 cases), S. Enteritidis phage type 9a (3 cases), S. Typhimurium phage type 101 (3 cases), and S. Weltevreden (3 cases).
  • Tetanus:  One confirmed case of tetanus was reported in December 2010 by Otago DHB.  A retired male, of european ethnicity in the 70+ age group, was hospitalised.  The probable source of infection was a forearm graze contracted whilst gardening.
  • Typhoid fever: Two laboratory-confirmed cases of typhoid fever were notified in December 2010. Both cases were males in the 10-19 years age group who had travelled to India during the incubation period.

1The ‘earliest’ date refers to the earliest recorded date for the case (onset or hospitalisation date rather than report date, if available). ‘Earliest’ date, as opposed to ‘report date’ alone, is used throughout the analysis of meningococcal disease notification data.   

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Report:

Monthly Notifiable Disease Surveillance Report - Dec 2010

Tables:

Monthly National Totals - Dec 2010

Monthly DHB Totals - Dec 2010

Monthly Rolling Totals - Dec 2010

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Dec 2010

Tables:

Monthly National Totals - Dec 2010

Monthly DHB Totals - Dec 2010

Monthly Rolling Totals - Dec 2010

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