NZPHSR - June 2016

1. Editorial
· A summary of the key trends in notifiable diseases for 2015

2. Notifiable disease surveillance
Significant increases in 12-monthly notification rate
· Cryptosporidiosis
· Legionellosis
· Pertussis
· VTEC infection
· Zika virus infection

Significant decreases in 12-monthly notification rate
· Acute rheumatic fever
· Campylobacteriosis
· Chikungunya fever
· Dengue fever
· Gastroenteritis (acute)
· Hepatitis (not otherwise specified)
· Measles
· Toxic shellfish poisoning

3. Other surveillance reports
· No reports this quarter

4. Outbreak surveillance
· 121 outbreaks (957 cases) notified in this quarter
· 50 final reports (554 cases); 71 interim reports (403 cases)
· 11.1 cases per outbreak on average
· 5 hospitalisations, 2 deaths

5. Outbreak case reports
· Heart-stopping meal—an outbreak of ciguatera food poisoning
· An “outbreak” of Group A streptococcal pharyngitis?

6. Laboratory surveillance
· Norovirus surveillance, 2015–2016: Emergence of a novel GII.17 virus