Monthly Notifiable Disease Surveillance Report - Mar 2014

Monday 23rd September 2019


Key notifiable disease trends

Giardiasis: 156 cases were notified in March 2014 compared to 145 cases notified during the previous month 134 cases notified during the same month of the previous year. The highest number of cases were reported from Waitemata DHB (23 cases), followed by Auckland and Canterbury (17 cases each) DHBs. Of the cases for which risk factor information was recorded, 54.3% (38/70) had recreational contact with water, 44.8% (26/58) had consumed food from a retail premises, 44.4% (24/54) had consumed water from an untreated supply, 34.8% (23/66) had contact with faecal matter, and 34.8% (23/66) had contact with other symptomatic people. Four finalised Giardia outbreaks (10 cases) were reported in March (Table 1).

Hepatitis not otherwise specified (NOS): One confirmed case was notified in March 2014. The case was a female in the 60–69 years age group from Waitemata DHB. The case was laboratory confirmed as hepatitis E.

Invasive pneumococcal disease: 36 cases were notified in March 2014 compared to 15 cases notified during the previous month and 28 cases notified during the same month of the previous year (Figure 1). The highest number of cases was reported from Counties Manukau DHB (7 cases), followed by Bay of Plenty (4 cases) DHB. The age range for cases was 17 months–89 years, with the highest numbers reported in the 70+ years (9 cases) and 60–69 years (7 cases) age groups. Twenty-six cases were hospitalised and one death (Table 3) from invasive pneumococcal disease was reported. Of the cases for which risk factor information was recorded, 60.0% (15/25) had a chronic illness, 33.3% (7/21) were smokers, 17.4% (4/23) were immunocompromised, and 12.0% (3/25) had chronic lung disease or cystic fibrosis.

Listeriosis: Three cases of listeriosis (2 perinatal and 1 non-perinatal) were notified in March 2014.
The mothers of the perinatal cases were from the Māori and Pacific Peoples ethnic groups, in the 30–39 years age group from Counties Manuaku and MidCentral DHBs. Both babies survived after delivery at 34 and 39 weeks gestation. For one case the serotype of Listeria monocytogenes was identified as serotype 4. Raw and precooked fish and shellfish were identified as a probable source of infection. The non-perinatal case was a male in the 60–69 years age group from Capital & Coast DHB. The case was reported to have an underlying illness.

Paralytic shellfish poisoning: One probable case was notified in March 2014. The case was a male in the 40–49 years age group from Northland DHB. The case had collected and consumed scallops.

Q fever: Two cases of Q fever were notified in March 2014. These cases have since been found to not meet the case criteria after further investigation.

Ross River virus infection: One confirmed case was notified in March 2014. The case was a male in the 60–69 years age group from Waitemata DHB and was in the Cook Islands during the incubation period.

Tuberculosis disease: 43 cases of tuberculosis disease (all new cases) were notified in March 2014 compared to 18 cases notified during the previous month and 21 cases notified during the same month of the previous year. Thirty cases were laboratory confirmed. 55.0% (22/40) of cases were from the Asian ethnic group. The highest number of cases was reported from Counties Manukau DHB (14 cases), followed by Auckland DHB (10 cases). The age range for cases was 3–84 years, with the highest number of cases in the 30–39 years (10 cases) age group. 77.1% (27/35) of cases were born outside of New Zealand. The Mycobacterium species was recorded in 70.0% (21/30) of the laboratory confirmed cases, all were infected with M. tuberculosis.

VTEC/STEC infection: 35 cases were notified in March 2014 compared to 10 cases notified during the previous month and 26 cases notified during the same month of the previous year (Figure 2). The highest numbers of cases were reported from Auckland and Waikato DHBs (8 cases each). The highest number of cases was recorded in the 1–4 years (15 cases) age group, followed by the 20–29 years (6 cases) age group.
26 cases were confirmed by the Enteric Reference Laboratory as being infected with VTEC/STEC. The serotype was identified as O157:H7 for all 26 cases. Of the cases for which risk factor information was recorded, 64.3% (9/14) had contact with animals, 35.7% (5/14) had contact with a person with similar symptoms, 33.3% (4/12) had contact with children in nappies, 33.3% (5/15) had recreational contact with water, and 18.8% (3/16) had attended school, pre-school or childcare. Two finalised E. coli O157:H7 outbreaks (6 cases) and two interim outbreaks (9 cases) were reported in March (Table 1 & 2).

Zika virus: Three probable cases were notified in March 2014. The cases were all males in the 15–19 years, 40–49 years, 50–59 years age groups from Taranaki (2 cases) and Waitemata (1 case) DHBs. All three cases were in the Cook Islands during the incubation period.

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Report:

Monthly Notifiable Disease Report - Mar 2014

Tables:

Monthly National Totals - Mar 2014

Monthly DHB Totals - Mar 2014

Monthly Rolling Totals - Mar 2014

 

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Monthly Notifiable Disease Report - Mar 2014

Tables:

Monthly National Totals - Mar 2014

Monthly DHB Totals - Mar 2014

Monthly Rolling Totals - Mar 2014

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