Communicable Disease Control Branch

Weekly Epidemiological Summary

29 January 2012 to 4 February 2012
 

Reports of enteric infections such as Campylobacteriosis and Salmonellosis continue to dominate notifications in South Australia this week. Tips for preventing food poisoning can be found on this  website.


GASTROINTESTINAL ILLNESSES

Viral Diarrhoea
One outbreak of gastroenteritis was reported this week in metropolitan aged care facility and the causative agent has been identified as norovirus.

Campylobacter infection
Seventy cases of campylobacteriosis were reported this week, an increase from 44 cases reported last week. Cases comprised of 39 males and 31 females aged 1 to 95 years. Cases reside across metropolitan and rural locations. No clusters of infection have been identified to date.

Cryptosporidiosis
Six cases of cryptosporidiosis were reported this week, compared to eight cases reported last week. Cases comprise of 3 males and 3 females aged 1 to 59 years.

Salmonellosis
Nineteen cases of salmonellosis were reported this week, compared with 22 cases reported last week. Cases comprised of 12 males and 7 females aged 3 to 62 years.

Investigations into a cluster of Salmonella Saintpaul cases did not elicit any common links and no further cases have been reported this week.   

One further case of Salmonella Typhimurium phage-type 108 and 3 cases of Salmonella Typhimurium phage-type 9 were reported this week.  Investigations continue in association with the Food Policy and Programs Section and to date, no common links between cases or source of infection have been identified in any cluster.

Typhoid fever
One case of Typhoid fever was reported in a nine year-old female recently who had recently returned from India. An interview elicited high risk contacts who are being screened for infection.


VACCINE-PREVENTABLE DISEASES

Influenza
Nine cases of influenza were reported this week, compared to seven cases reported in the previous week. Cases comprised of four males and five females with an age range of 4 to 65 years. Four infections were due to Influenza A virus and five infections were caused by Influenza B virus.

The influenza chart on this site demonstrates a low level of activity in South Australia.

Pertussis
Eleven cases of pertussis were confirmed for this reporting week, compared with seven cases in the previous week. Cases comprised of six males and five females, with an age range of <1 to 70 years.

The pertussis chart on this site illustrates low levels of activity across all age groups in South Australia.

Invasive pneumococcal disease
Two cases of invasive pneumococcal disease were reported this week in females aged 45 and 57 years. There have been five cases of invasive pneumococcal disease reported year to date, compared with no cases reported for the same period last year.

Rotavirus
Thirteen cases of rotavirus were reported this week, consistent with 12 cases reported last week. Cases comprised of five males and eight females aged <1 to 88 years. Ten cases were aged less than 5 years of age.

The rotavirus chart on this site illustrates the rotavirus activity in South Australia.

Varicella infection
Thirty-nine cases of varicella virus infection were reported this week, compared with 34 cases reported last week. To date, medical notifications have characterised five infections as chickenpox and 17 infections as shingles.

Cases comprised of 19 males and 20 females aged <1 to 83 years. Cases are dispersed across metropolitan and regional South Australia.


OTHER DISEASES

Arboviral infections
Six cases of Ross River virus infection were notified this week, compared to two cases reported last week. There have been 26 cases of Ross River virus infection reported this year, compared with 396 cases for the same period last year.

One cases of Barmah Forest virus infection were notified this week, compared to four cases notified last week. There have been 10 cases reported this year compared with 42 cases for the same period last year.

One case of Dengue fever was reported this week in a 47 year-old female who had travelled to Indonesia.


OUTBREAK TABLE

A summary of outbreaks reported to CDCB can be located on our web site.

Last up-dated 8 February 2012.