Monthly Notifiable Disease Surveillance Report - Feb 2013

Monday 23rd September 2019


Key notifiable disease trends

Cholera:  One case of cholera was notified in February 2013.  The case was subsequently made ‘not a case’ in March after further investigation.

Decompression sickness: One case of decompression sickness was notified in February 2013.  The case was a male tourist from the USA in the 30-39 year age group who had been diving.

Cryptosporidiosis: 119 cases of cryptosporidiosis were notified in February 2013 compared to 28 cases notified during the same month of the previous year (Figure 1). The cases ranged in age from 5 months to 82 years, with the highest numbers of cases in the 1-4 years (38 cases) followed by those in the 30-39 years (24 cases), and 5-9 years (18 cases) age groups. The highest numbers of cases were reported in Waikato (31 cases), Hawke's Bay (26 cases), and Capital and Coast (12 cases) DHBs. Among the cases where risk factor information was recorded, 70.7% (41/58) had recreational contact with water, 50.0% (40/80) attended school, pre-school or childcare, 39.0% (23/59) had contact with faecal matter, 35.3% (18/51) had consumed food from a food premises, 32.1% (18/56) had contact with other symptomatic people, 29.3% (17/58) had drank from non-habitual water supply, and 27.3% (15/55) had consumed untreated water. Nine Cryptosporidium outbreaks were reported in February, including three final outbreaks (nine cases) and six interim outbreaks (case numbers yet to be determined).

Cysticercosis:  One confirmed case of cysticercosis was notified in February 2013.  The case was a female in the 20-29 year age group from Nelson Marlborough DHB and was in Nepal during the incubation period.
 
Dengue fever
: Seven cases of dengue fever were notified in February 2013, compared to five cases during the same month of last year. All of the cases had travelled overseas during the incubation period, and the countries visited were Thailand (3 cases each), and Italy, Laos, New Caledonia, Samoa, Solomon Islands, Sri Lanka (1 case each). Two cases had travelled to more than one country, including the case that travelled to Italy.

Haemophilus influenzae type b: One probable case of Haemophilus influenzae type b was notified in February 2013. The case was in the 70+ years age group and was from Waitemata DHB.

Hepatitis NOS:  One confirmed case of hepatitis NOS was notified in February 2013. The case, a female in the 70+ years age group from Counties Manukau DHB, was infected with Hepatitis E and had been overseas during the incubation period.

Hydatid:  One case of hydatid disease was notified in February 2013.  The case was a female in the 60-69 year age group from Bay of Plenty DHB and was in India during the incubation period.

Listeriosis: Four cases of listeriosis (3 non-perinatal and 1 perinatal) were notified in February 2013. For the perinatal case, the mother was from the European ethnic group, in the 20-29 years age group, and from Taranaki DHB. The serotype of Listeria monocytogenes was identified as serotype 4.  Home killed meat was identified as a probable source of infection.  The non-perinatal cases were from Bay of Plenty, Canterbury and Wairarapa (1 case each) DHBs and were distributed by age group as follows: 70+ years (2) and 60-69 years (1). Two of the three cases were reported to have underlying illness and/or were on immunosuppressive medication. All three cases were infected with L. monocytogenes serotype 1/2.

Pertussis: 473 cases of pertussis were notified in February 2013, compared with 566 cases notified the previous month and 444 cases in the same month of the previous year (Figure 2). Twenty-seven cases were hospitalised and no deaths were reported. There were 123 (26.0%) cases laboratory-confirmed by isolation of Bordetella pertussis from the nasopharynx. A further 102 (21.6%) cases were laboratory-confirmed by PCR. The highest number of cases was from Canterbury DHB (85), followed by Waikato (63) and Auckland (38) DHBs. The cases ranged in age from 21 days to 85 years, with 23.5% under 5 years old (including 29 cases aged less than 1 year). The highest numbers of cases occurred in the 1-4 years (82 cases), 40-49 years (72 cases), 50-59 years (59 cases), and 30-39 years (53 cases) age groups. The vaccination status was recorded for 224 (47.7%) of cases. Of these, 60 were reported as not vaccinated, 22 received one dose of vaccine, four received two doses of vaccine, 97 received three or more doses (including 13 who had received all five doses), and 41 were reported as being vaccinated but no dose information was available. Of the cases where the relevant information was recorded 36.8% (60/163) had contact with a laboratory-confirmed pertussis case, and 28.9% (91/315) attended school, pre-school or childcare. Five B. pertussis outbreaks involving 12 cases in total were reported in February.

Rickettsial disease:  One probable case of rickettsial disease due to spotted fever was notified in February 2013.  The case was a male in the 15-19 years age group from Northland DHB.  The case was overseas in Thailand during the incubation period.

Taeniasis: One confirmed case of taeniasis was notified in February 2013. The case was a female in the 60-69 years age group from Counties Manukau DHB and was in Southern and South East Asia during the incubation period.

Tetanus
:  One confirmed case of tetanus was notified in February 2013 from Lakes DHB.  The case was a female in the 60-69 year age group who spiked herself on a rose thorn while gardening. She was not vaccinated.

Typhoid fever
: 13 cases of typhoid fever were notified in February 2013, compared with two cases in the same month of the previous year. Cases were from the following DHBs: Counties Manukau (8 cases), Auckland (3 cases), Waikato and Waitemata (1 case each). The highest number of cases occurred in the 10-14 and 20-29 years age groups (3 cases each). Travel history was recorded for nine (69.2%) of the cases, of which eight reported travel during the incubation period. The countries visited were: Samoa (5 cases), and Korea, India, and Pakistan (1 case each). The serotype involved was recorded for five cases: Salmonella Typhi E1a (3 cases) and S. Typhi (2 cases).

VTEC/STEC infection: 15 cases of VTEC/STEC infection were notified in February 2013. This compares with 11 cases notified in the same month of the previous year. Cases were from the following DHBs: Northland (5 cases), Auckland, Southern, (2 cases each), and Counties Manukau, Waitemata Waikato, Lakes, Nelson Marlborough, and Canterbury (1 case each). The highest number of cases occurred in the 1-4 years and 20-29 years age groups (3 cases each). Five cases were hospitalised of which one had haemolytic uraemic syndrome. The serotype/organism was identified by the Enteric Reference Laboratory for five cases, three of which were Escherichia coli O157:H7, two of which were identified only as verocytotoxin detected. Among the cases for which risk factor was recorded, 100.0% (4/4) had contact with animals, and 50.0% (2/4) had recreational contact with water.

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Report:

Monthly Notifiable Disease Surveillance Report - Feb 2013

Tables:

Monthly National Totals - Feb 2013

Monthly DHB Totals - Feb 2013

Monthly Rolling Totals - Feb 2013

 

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Monthly Notifiable Disease Surveillance Report - Feb 2013

Tables:

Monthly National Totals - Feb 2013

Monthly DHB Totals - Feb 2013

Monthly Rolling Totals - Feb 2013

Ph: +64 4 914 0700 Fax: +64 4 914 0770 Email: survqueries@esr.cri.nz