Monthly Notifiable Disease Surveillance Report - Jan 2010

Monday 23rd September 2019


Key notifiable disease trends

  • Campylobacteriosis: 839 campylobacteriosis cases were notified in January 2010 compared to 791 cases notified in the same month of the previous year (Figure 1).  Seven hundred and twenty nine cases were reported to be laboratory-confirmed.  For the 12 month period ending 31 January 2010, the highest incidence rates were reported from Hutt Valley (256.5 per 100 000 population, 366 cases) and Capital and Coast (248.5 per 100 000 population, 716 cases) DHBs compared to a national rate of 167.4 per 100 000 population. 
  • Cholera: The cholera case reported in January 2010 on further investigation was found to be not a case.  The case has since been de-notified.
  • Giardiasis: 153 giardiasis cases were notified in January 2010 compared to 123 cases notified at the same time last year (Figure 2).  Canterbury DHB reported the highest number of cases (26 cases), followed by Counties Manukau (22 cases) and Auckland (20 cases) DHBs.  Among cases where risk factor information was recorded, 46.7% (14/30) had recreational water contact during the incubation period, 39.1% (9/23) had faecal contact, 30.8% (8/26) had consumed untreated water, 26.9% (7/26) had contact with another symptomatic person, 24.0% (6/25) had contact with farm animals, 19.2% (5/26) had consumed food from a food premise, 15.8% (6/38) had travelled overseas, 11.1% (4/36) attended school and 4.5% (1/22) had contact with a sick animal.  Three Giardia outbreaks were reported involving 11 cases.
  • Haemophilus influenzae serotype b: Three cases of Haemophilus influenzae serotype b (Hib) were notified in January 2010, all of which were laboratory-confirmed.  The cases were aged less than one year (1 case), 30-39 years (1 case) and 60-69 years (1 case) and were from Waikato (2 cases) and Canterbury (1 case) DHBs.  The infant and one of the adults were not immunised, and the vaccination status of the other adult was unknown.    All three cases were hospitalised. The 60-69 year old case died and Hib was reported as the primary cause of death.  This case had significant comorbidities including neutropaenia.
  • Malaria: 10 cases of malaria were notified in January 2010 compared to two notified in the same month of the previous year.  Cases were distributed by age as follows: 20-29 years (3 cases), 30-39 years (3 cases), 40-49 years (2 cases), 50-59 years (1 case) and 60-69 years (1 case).  Eight cases were overseas during the incubation period and travel history is unknown for the remaining two cases.  The countries/regions visited were Cambodia (2 cases), and Central and West Africa, Congo, Germany, Ghana, Nigeria, Papua New Guinea, Sudan, United Kingdom, and Vanuatu (1 case each).  Four cases were infected with Plasmodium falciparum, four cases infected with P. vivax, the plasmodium species was indeterminate for one case and was unknown for the remaining case.
  • Meningococcal disease: Based on the earliest date available1, seven cases of meningococcal disease were notified during January 2010, six (85.7%) were laboratory-confirmed.  In comparison, nine cases were notified in the previous month, December 2009, and eight cases were notified during the same month last year.  For the 12 month period ending 31 January 2010, Tairawhiti DHB recorded the highest incidence rate of 13.0 per 100 000 population (6 cases), followed by MidCentral (6.0 per 100 000 population, 10 cases) and Lakes (4.9 per 100 000 population, 5 cases) DHBs.  The highest age-specific incidence rate was in infants aged less than one year (41.2 per 100 000 population, 26 cases), followed by those in the 1-4 years age group (13.2 per 100 000 population, 32 cases).
  • Pertussis: 95 cases of pertussis were notified in January 2010, compared to 142 in the preceding month and 79 notifications in the same month of the previous year.  There were 40 (42.1%) laboratory-confirmed cases.  The highest number of cases were reported by Capital and Coast DHB (15 cases), followed by Waikato (14 cases) and Canterbury (12 cases) DHBs.  For the 12 month period ending 31 January 2010, the highest incidence rates were reported from West Coast (73.6 per 100 000 population, 24 cases) and Waikato (65.3 per 100 000 population, 235 cases) DHBs compared to a national rate of 32.7 per 100 000 population.  The current 12 month rate by age group was highest amongst infants aged less than one year (179.2 per 100 000 population, 113 cases), followed by children in the 1-4 years age group (58.2 per 100 000 population, 141 cases).  There were three outbreaks due to Bordetella pertussis involving 11 cases.  Further analysis of pertussis notifications is available in the Pertussis Report which is updated fortnightly and available here.
  • Rickettsial disease: One laboratory-confirmed case of murine typhus was notified in January 2010.  The case was a 50-59 year old male from Counties Manukau DHB and was hospitalised.  The case had been in Nepal during the incubation period. 
  • Toxic shellfish poisoning: Six cases of toxic shellfish poisoning (1 probable, 4 suspect and 1 under investigation) were notified in January 2010.  Paralytic shellfish poisoning (PSP) was suspected for three cases and the type of toxic shellfish poisoning (TSP) was unspecified for the remaining three cases.  Five cases reported eating tuatuas and one case reported eating pipis.  The six cases are part of an outbreak resulting from consumption of shellfish from the coastal area between Tairua and Whakatane River during a time of public health warnings and had developed symptoms of TSP.  Shellfish are monitored in this part of Tauranga and are known to have elevated PSP levels.  Three cases were hospitalised.


1
The ‘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.       

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.

Report:

Monthly Notifiable Disease Surveillance Report - Jan 2010

Tables:

Monthly National Totals - Jan 2010

Monthly DHB Totals - Jan 2010

Monthly Rolling Tables - Jan 2010

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Jan 2010

Tables:

Monthly National Totals - Jan 2010

Monthly DHB Totals - Jan 2010

Monthly Rolling Tables - Jan 2010

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