National Notifiable Diseases Surveillance System current CDNA fortnightly report

The Communicable Diseases Network Australia (CDNA) holds fortnightly teleconferences to share and evaluate the latest information and developments in communicable diseases surveillance. This report provides a fortnightly summary on diseases of current interest and notifications of Australia's nationally notifiable diseases.

In this section:

National Notifiable Diseases Surveillance System current CDNA fortnightly report

Fortnight 2: 14 to 27 January 2012

NNDSS report print friendly version (PDF 34 KB)

If you are unable to download the PDF file please email: epi AT health.gov.au

Summary notes

Murray Valley Encephalitis virus (MVEV) infection

Between 14 and 27 January 2012, there was one notification of MVEV infection. This is the only notification during the past quarter, and prior to this case, the last case of MVEV infection was notified in June 2011.

The case was most likely to have been infected in the New England region of New South Wales. The case developed symptoms in early December 2011 but there were no signs of encephalitis. New South Wales Health has issued a press release about the case http://www.hnehealth.nsw.gov.au/news/media_releases/media_releases_current_year/temp6/urgent_mosquito_warning_for_the_north-west_region_of_hunter_new_england

Kunjin virus (KUNV) infection

Between 14 and 27 January 2012, there was one notification of KUNV infection. This is the only notification during the past quarter. Prior to this case, the last case of KUNV infection was notified in April 2011.

The case was reported from the South Coast of New South Wales. New South Wales Health has issued a press release about the case http://www.health.nsw.gov.au/news/2012/20120118_00.html. Further investigations have concluded this case was most likely infected on the South Coast during December 2011.

Chlamydial infection

This reporting period there were 2,604 notifications of chlamydial infection reported to the NNDSS. The cases were mostly notified from Queensland (798), New South Wales (684) and Western Australia (423). Over the last 12 months³ there have been 80,893 notifications, which is 1.4 times the preceding five year mean⁴ for the equivalent periods. Chlamydia continues to be the most frequently notified sexually transmissible infection in Australia, with notification rates highest among the age group 15 to 29 years.

Gonococcal infection

This reporting period there were 519 notifications of gonococcal infection reported to the NNDSS. The cases were mostly notified from New South Wales (151), Queensland (125) and Victoria (91). Over the past quarter¹ there have been 3,224 notifications, which is 1.6 times the quarterly rolling five year mean² for the same period. In the past twelve months³ there have been 12,258 notifications. Gonococcal infection notifications continue to present an upward trend, with some jurisdictions noting higher than expected numbers of notifications. Rates continue to be higher among males than females, suggesting transmission predominately among men who have sex with men.

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Interpretative notes

Selected diseases are chosen each fortnight based on either exceeding two standard deviations from the 90 day and/or 365 day five year rolling mean or other disease issues of significance identified during the reporting period. All diseases reported are analysed by notification receive date. Data are extracted each Monday of a CDNA week.
Totals comprise data from all States and Territories. Cumulative figures are subject to retrospective revision so there may be discrepancies between the number of new notifications and the increment in the cumulative figure from the previous period.
discrepancies between the number of new notifications and the increment in the cumulative figure from the previous period.
1. The past quarter (90 day) surveillance period includes the date range (30/10/2011-27/01/2012).
2. The quarterly (90 day) five year rolling mean is the average of 5 intervals of 90 days up to (27/01/12). The ratio is the notification activity in the past quarter (90 days) compared with the five year rolling mean for the same period.
3. The past year (365 day) surveillance period includes the date range (28/01/2011-27/01/2012).
4. The yearly (365 day) five year rolling mean is the average of 5 intervals of 365 days up to (27/01/12). The ratio is the notification activity in the past year (365 days) compared with the five year rolling mean for the same period.
The five year rolling mean and the ratio of notifications compared with the five year rolling mean should be interpreted with caution. Changes in surveillance practice, diagnostic techniques and reporting may contribute to increases or decreases in the total notifications received over a five year period. Ratios are to be taken as a crude measure of current disease activity and may reflect changes in reporting rather than changes in disease activity.

NNDSS provisional fortnightly report of notifications from states and territories for the period 14 to 27 January 2012

Disease	State or territory								Totals for Australia				Historical 90 day period				Historical 365 day period
Disease	ACT	NSW	NT	Qld	SA	Tas	Vic	WA	This reporting period	Previous reporting period	Same reporting period last year	2011 YTD	Past quarter¹	Quarterly rolling 5year mean²	Ratio past quarter/ 5year mean*	Exceeds quarterly rolling mean +2SD by	Past year³	Yearly rolling 5Year mean⁴	Ratio past year/ 5year mean*	Exceeds yearly rolling mean +2SD by
Bloodborne diseases
Hepatitis (NEC)	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.4	0.0	-
Hepatitis B (incident)	0	1	0	3	0	0	1	1	6	8	10	14	47	61.6	0.8	-	189	264.2	0.7	-
Hepatitis B (unspecified)	4	96	0	33	5	1	61	32	232	223	256	446	1,549	1,550.4	1.0	-	6,698	6,791.8	1.0	-
Hepatitis C (incident)	1	1	0	NN	3	0	0	0	5	5	14	10	41	93.2	0.4	-	265	390.0	0.7	-
Hepatitis C (unspecified)	7	87	4	82	6	6	68	30	290	294	353	581	2,194	2,612.2	0.8	-	10,013	11,474.6	0.9	-
Hepatitis D	0	1	0	0	0	0	0	0	1	0	0	1	4	6.2	0.6	-	36	35.2	1.0	-
Gastrointestinal diseases
Botulism	0	0	0	0	0	0	0	0	0	0	0	0	0	0.2	0.0	-	2	0.6	3.3	-
Campylobacteriosis	22	NN	7	247	105	37	266	108	792	981	855	1,758	4,609	4,569.4	1.0	-	17,826	16,285.4	1.1	-
Cryptosporidiosis	5	20	16	98	9	0	7	10	165	146	63	310	571	551.4	1.0	-	1,945	2,811.0	0.7	-
Haemolytic uraemic syndrome (HUS)	0	0	0	0	0	0	0	0	0	0	0	0	4	6.4	0.6	-	14	17.4	0.8	-
Hepatitis A	0	0	0	1	0	0	1	0	2	8	9	10	38	72.8	0.5	-	141	309.6	0.5	-
Hepatitis E	0	0	0	1	0	0	0	0	1	0	3	1	9	6.2	1.5	-	37	32.0	1.2	-
Listeriosis	0	2	0	0	0	0	2	0	4	7	2	11	24	15.8	1.5	1.1	73	68.6	1.1	-
STEC, VTEC	0	2	0	5	2	0	1	0	10	4	2	14	44	34.4	1.3	-	105	97.8	1.1	-
Salmonellosis	9	156	15	160	48	16	112	76	592	599	762	1,180	3,247	2,598.0	1.2	-	12,163	9,608.4	1.3	-
Shigellosis	0	14	8	3	4	0	7	1	37	31	34	67	163	151.6	1.1	-	506	628.6	0.8	-
Typhoid	0	0	0	2	0	0	0	1	3	3	4	6	33	23.8	1.4	-	132	97.4	1.4	6.8
Quarantinable diseases
Cholera	0	0	0	0	0	0	0	0	0	0	0	0	0	1.8	0.0	-	6	3.8	1.6	-
Highly pathogenic avian influenza in humans (HPAIH)	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.0	0.0	-
Plague	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.0	0.0	-
Rabies	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.0	0.0	-
Severe acute respiratory syndrome	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.0	0.0	-
Smallpox	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.0	0.0	-
Viral haemorrhagic fever (NEC)	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.0	0.0	-
Yellow fever	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	2	0.0	0.0	-
Sexually transmissible infections
Chlamydial infection	66	684	66	798	173	38	356	423	2,604	2,668	2,914	5,256	18,651	13,996.6	1.3	143.9	80,893	59,345.2	1.4	474.8
Donovanosis	0	0	0	0	0	0	0	0	0	0	0	0	0	0.6	0.0	-	0	2.6	0.0	-
Gonococcal infection	1	151	54	125	12	3	91	82	519	551	477	1,059	3,224	1,964.8	1.6	637.7	12,258	8,433.2	1.5	1,850.2
Syphilis < 2 years	0	2	0	6	1	0	0	3	12	17	55	29	203	291.2	0.7	-	1,183	1,227.6	1.0	-
Syphilis > 2 years or unspecified duration	3	0	0	8	NDP	0	35	3	49	43	51	92	270	308.2	0.9	-	1,265	1,363.4	0.9	-
Syphilis - congenital	0	0	0	0	0	0	0	0	0	1	1	1	1	1.2	0.8	-	6	6.4	0.9	-
Vaccine preventable diseases
Diphtheria	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	4	0.0	0.0	-
Haemophilus influenzae type b	0	0	0	0	0	0	0	0	0	1	0	1	3	5.0	0.6	-	14	21.2	0.7	-
Influenza (laboratory confirmed)	3	21	1	37	11	1	19	38	131	164	397	295	1,675	1,628.0	1.0	-	27,124	19,188.0	1.4	-
Measles	0	1	0	0	1	0	1	0	3	2	13	4	48	9.6	5.0	23.9	180	77.8	2.3	21.4
Mumps	1	0	0	3	1	0	2	1	8	9	6	17	41	81.6	0.5	-	149	280.4	0.5	-
Pertussis	19	390	12	361	11	36	206	288	1,323	1,537	1,842	2,854	9,977	6,189.6	1.6	-	37,915	19,111.4	2.0	-
Pneumococcal disease (invasive)	2	13	3	2	2	0	5	0	27	56	40	77	325	293.6	1.1	-	1,886	1,556.2	1.2	136.6
Poliomyelitis	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.3	0.0	-
Rubella	0	1	0	0	1	0	1	0	3	2	0	5	11	7.6	1.4	-	63	40.0	1.6	0.7
Rubella - congenital	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.4	0.0	-
Tetanus	0	0	0	0	1	0	0	0	1	0	0	1	1	0.4	2.5	-	4	3.6	1.1	-
Varicella zoster (chickenpox)^†	0	NN	4	0	12	1	15	5	37	81	74	118	543	563.2	1.0	-	2,027	1,734.2	1.2	138.1
Varicella zoster (shingles)^†	1	NN	4	0	23	9	31	21	89	138	157	225	928	645.0	1.4	-	3,862	2,197.2	1.8	148.5
Varicella zoster (unspecified)^†	2	NN	0	150	35	12	95	54	348	420	289	761	2,215	1,418.6	1.6	86.8	7,920	5,332.4	1.5	-
Vectorborne diseases
Arbovirus infection (NEC)	0	0	0	1	0	0	0	0	1	0	1	1	10	4.6	2.2	-	25	18.4	1.4	-
Barmah Forest virus infection	0	8	3	27	7	0	1	2	48	59	165	107	343	399.4	0.9	-	1,756	1,799.8	1.0	-
Dengue virus infection	0	7	4	6	2	0	1	51	71	53	75	124	272	216.8	1.3	-	801	749.6	1.1	-
Japanese encephalitis virus infection	0	0	0	0	0	0	0	0	0	0	0	0	0	0.2	0.0	-	0	0.2	0.0	-
Kunjin virus infection	0	1	0	0	0	0	0	0	1	0	0	1	1	0.0	0.0	-	2	1.8	1.1	-
Malaria	0	0	0	7	2	0	0	1	10	7	23	17	96	115.4	0.8	-	398	552.0	0.7	-
Murray Valley encephalitis virus infection	0	1	0	0	0	0	0	0	1	0	0	1	1	0.0	0.0	-	16	1.4	11.4	11.3
Ross River virus infection	0	14	23	53	7	0	11	113	221	229	359	450	923	944.8	1.0	-	5,078	5,042.6	1.0	-
Zoonoses
Anthrax	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.6	0.0	-
Australian bat lyssavirus	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.0	0.0	-
Brucellosis	0	0	0	2	0	0	0	1	3	0	0	3	10	9.8	1.0	-	43	36.8	1.2	-
Leptospirosis	0	0	0	5	0	0	0	0	5	8	19	13	26	25.6	1.0	-	210	128.6	1.6	51.7
Lyssavirus (NEC)	0	0	0	0	0	0	0	0	0	0	0	0	0	0.0	0.0	-	0	0.0	0.0	-
Ornithosis	0	0	0	0	0	0	0	0	0	4	1	4	21	25.2	0.8	-	86	96.6	0.9	-
Q fever	0	1	0	2	0	0	0	0	3	13	16	16	77	86.2	0.9	-	316	374.8	0.8	-
Tularaemia	0	0	0	0	0	0	0	0	0	0	0	0	1	0.0	0.0	-	2	0.0	0.0	-
Other bacterial infections
Legionellosis	0	2	0	1	1	0	2	4	10	21	10	31	101	79.4	1.3	-	349	305.4	1.1	-
Leprosy	0	0	0	0	0	0	0	0	0	0	0	0	3	1.6	1.9	-	10	9.2	1.1	-
Meningococcal infection (invasive)	1	1	0	1	0	0	1	0	4	11	14	15	43	59.2	0.7	-	234	280.6	0.8	-
Tuberculosis	0	5	0	12	2	0	10	2	31	40	51	71	280	342.0	0.8	-	1,184	1,242.4	1.0	-
Total	147	1,683	224	2,242	487	160	1,409	1,351	7,703	8,444	9,417	16,058	52,901				237,416

* Ratio of the past quarter 90 day prior surveillance period to the past 90 day 5 year rolling mean, or ratio of the past year 365 day prior surveillance period to the 365 day 5 year rolling mean.
† 365 day historical mean and ratios for varicella zoster (chickenpox); varicella zoster (shingles); and varicella zoster (unspecified) are based on 4 years data.

NN = Not notifiable,

NDP = No data provided,

NEC = Not elsewhere classified

Dates used are:
1Past Quarter (90d prior surveillance period): 30/10/2011 to 27/01/2012
2Quarterly rolling 5Yr Mean (90d 5Yr Mean):
Quarterly rolling 5Yr Mean (90d 5Yr Mean) 1: 30/10/2010 to 27/01/2011
Quarterly rolling 5Yr Mean (90d 5Yr Mean) 2: 30/10/2009 to 27/01/2010
Quarterly rolling 5Yr Mean (90d 5Yr Mean) 3: 30/10/2008 to 27/01/2009
Quarterly rolling 5Yr Mean (90d 5Yr Mean) 4: 30/10/2007 to 27/01/2008
Quarterly rolling 5Yr Mean (90d 5Yr Mean) 5: 30/10/2006 to 27/01/2007
3Past year (365d prior surveillance period): 28/01/2011 to 27/01/2012
4Yearly rolling 5Yr Mean (365d 5Yr Mean):
Yearly rolling 5Yr Mean (365d 5Yr Mean) 1: 28/01/2010 to 27/01/2011
Yearly rolling 5Yr Mean (365d 5Yr Mean) 2: 28/01/2009 to 27/01/2010
Yearly rolling 5Yr Mean (365d 5Yr Mean) 3: 29/01/2008 to 27/01/2009
Yearly rolling 5Yr Mean (365d 5Yr Mean) 4: 28/01/2007 to 27/01/2008
Yearly rolling 5Yr Mean (365d 5Yr Mean) 5: 28/01/2006 to 27/01/2007

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