1. Editorial
⦁ Increase in Neisseria meningitidis group W invasive disease
2. Notifiable disease surveillance
Significant increases in 12-monthly notification rate
⦁ Cryptosporidiosis
⦁ Hepatitis A
⦁ Leptospirosis
⦁ Malaria
⦁ Meningococcal disease
⦁ Mumps
⦁ Pertussis
⦁ Shigellosis
⦁ Typhoid fever
⦁ VTEC/STEC infection
Significant decreases in 12-monthly notification rate
⦁ Campylobacteriosis
⦁ Chikungunya fever
⦁ Gastroenteritis (acute)
⦁ Listeriosis
⦁ Measles
⦁ Zika virus infection
3. Other surveillance reports
⦁ Increase in institutional norovirus outbreaks in the greater Wellington region, 2017
4. Outbreak surveillance
⦁ 198 outbreaks (2924 cases) notified in this quarter
⦁ 134 final reports (2420 cases); 64 interim reports (504 cases)
⦁ 18.1 cases per outbreak on average
⦁ 38 hospitalisations, 5 deaths
5. Outbreak case reports
⦁ No reports this quarter
6. Laboratory surveillance
⦁ Norovirus surveillance April 2016–December 2017: emergence of GII.P16-GII.4 Sydney_2012