Monthly Notifiable Disease Surveillance Report - Jul 2013

Saturday 21st September 2019


Key notifiable disease trends

Campylobacteriosis: 525 cases of campylobacteriosis were notified in July 2013 compared to 327 cases notified during the same month of the previous year (Figure 1). For the 12 month period ending 31 July 2013, the highest rates were in South Canterbury (300.6 per 100 000 population, 170 cases), West Coast (209.7 per 100 000 population, 69 cases), and Taranaki (192.2 per 100 000 population, 212 cases) DHBs compared to a national rate of 144.7 per 100 000 population. Two finalised Campylobacter outbreaks were reported in July (5 cases).

Cryptosporidiosis: 78 cases of cryptosporidiosis were notified in July 2013 compared to 49 cases notified during the same month of the previous year (Figure 2). The cases ranged in age from seven months to 73 years, with the highest number of cases in the 1-4 years (30 cases) age group followed by those in the 30-39 years (16 cases), and 20-29 years (8 cases) age groups. The highest numbers of cases were reported from the Auckland region (38 cases). Among the cases where risk factor information was recorded, 51.7% (15/29) had contact with other symptomatic people, 46.7% (14/30) had been overseas, 46.2% (12/26) had contact with faecal matter, 43.5% (10/23) had consumed food from a food premises and 37.0% (10/27) had contact with farm animals. Ten Cryptosporidium outbreaks were reported in July, including seven finalised outbreaks (25 cases) and three interim outbreaks (case numbers yet to be determined).

Hepatitis A: 11 cases of hepatitis A were notified in July 2013 compared to three cases in the same month of the previous year. Ethnicity was recorded for 90.9% (10/11) of the cases, all of which were in the European or Other ethnic group. The highest numbers of cases were reported from Canterbury DHB (8 cases), al of whom were part of an outbreak that was first reported in April 2013. The cases ranged in age from 19 months to 52 years with the highest numbers of cases in the 5-9 years (3 cases) and 20-29 years age groups (2 cases). One of the cases had travelled overseas to Indonesia during the incubation period.

Hepatitis C: 11 cases of hepatitis C were notified in July 2013 (7 confirmed and 4 under investigation); one of these cases has since been found to not meet case criteria after further investigation. Four cases were notified in the same month of the previous year. Ethnicity was recorded for 80.0% (8/10) of the cases: European or Other (7 cases) and Māori (1) ethnic groups. The risk factors were recorded for the seven confirmed cases: history of injecting drug use (6 cases), sexual contact with a confirmed case (or carrier) (4 cases), household contact with a confirmed case (or carrier) (3 cases), and body piercing or tattooing procedures in the last 12 months (1 case). Travel history was recorded for 5/7 confirmed cases and none travelled overseas during the incubation period.

Legionellosis: 14 cases of legionellosis were notified in July 2013 (8 confirmed, 2 probable, and 4 under investigation) compared to seven cases notified in the in the same month of the previous year. The following section relates to the 10 confirmed and probable cases only. The highest number of cases was reported in the Auckland region (4 cases). The cases ranged in age from 12 to 77 years, with the highest number of cases in the 50-59 years (4 cases) age group. Five hospitalisations and one death were reported. The Legionella species was identified for 90% (9/10) of the cases: Legionella pneumophila serogroup 1 (4 cases), L. pneumophila serogroup 10, L. pneumophila serogroup 12, L. dumoffii, L. micdadei and L. longbeachae serogroup unknown (1 case each).

Leprosy: One probable case of leprosy was notified in July 2013. The case was a male in the 15-19 years age group from MidCentral DHB. The case was overseas in Kiribati during the incubation period.

Measles: Three cases of measles were notified in July 2013, all cases have since been found to not meet case criteria after further investigation.

Rickettsial disease:  One case of confirmed murine typhus (Rickettsia typhi infection) was notified in July 2013. The case was a male in the 20-29 years age group from Taranaki DHB. The case was overseas in Thailand and South Eastern Europe during the incubation period.

Q fever: One case of Q fever was notified in July 2013, the case has since been found to not meet case criteria after further investigation.

VTEC/STEC infection: Five cases of VTEC/STEC infection were notified in July 2013, two of these cases have since been found to not meet case criteria after further investigation. 13 cases were notified in the previous month and eight cases were notified in the same month of the previous year. The cases were reported from Counties Manukau, Capital & Coast, and Canterbury (1 case each) DHBs. The cases occurred in the following age groups: 5-9 years, 10-14 years, and 40-49 years (1 case each). All cases were confirmed by the Enteric Reference Laboratory as being infected with Escherichia coli O157:H7. Among the cases for whom risk factor was recorded, 100.0% (2/2) had contact with animals, 50.0% (1/2) had recreational contact with water and had attended school, pre-school or childcare.

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Report:

Monthly Notifiable Disease Surveillance Report - Jul 2013

Tables:

Monthly National Totals - Jul 2013

Monthly DHB Totals - Jul 2013

Monthly Rolling Totals - Jul 2013

 

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Monthly Notifiable Disease Surveillance Report - Jul 2013

Tables:

Monthly National Totals - Jul 2013

Monthly DHB Totals - Jul 2013

Monthly Rolling Totals - Jul 2013

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