S.aureus bacteraemia surveillance quarterly report: July - September 2011

This quarterly report provides epidemiological data on�S. aureus�in Northern Ireland, including overall infection�figures as well as those specific to MRSA and MSSA. The report highlights key points, rates, trends and statistical process control charts. The report also provides information on surveillance methods and data for each hospital and Health and Social Care Trust in Northern Ireland

C. difficile surveillance quarterly report: October - December 2011

This quarterly report provides epidemiological data on C. difficile in Northern Ireland, and includes key points, a comprehensive�overview of all C. diff infections, rates, trends, age-specific information�and statistical process control charts. The report also provides information on surveillance methods and data for each hospital and Health and Social Care Trust in Northern Ireland.

S.aureus bacteraemia surveillance quarterly report: October - December 2011

This quarterly report provides epidemiological data on�S. aureus�in Northern Ireland, including overall infection�figures as well as those specific to MRSA and MSSA. The report highlights key points, rates, trends and statistical process control charts. The report also provides information on surveillance methods and data for each hospital and Health and Social Care Trust in Northern Ireland

C. difficile surveillance quarterly report: January - March 2012

This quarterly report provides epidemiological data on C. difficile in Northern Ireland, and includes key points, a comprehensive�overview of all C. diff infections, rates, trends, age-specific information�and statistical process control charts. The report also provides information on surveillance methods and data for each hospital and Health and Social Care Trust in Northern Ireland.

S.aureus bacteraemia surveillance quarterly report: January - March 2012

This quarterly report provides epidemiological data on�S. aureus�in Northern Ireland, including overall infection�figures as well as those specific to MRSA and MSSA. The report highlights key points, rates, trends and statistical process control charts. The report also provides information on surveillance methods and data for each hospital and Health and Social Care Trust in Northern Ireland

Surveillance of influenza in Northern Ireland

The influenza season started later than normal, clinical indices began to increase marginally in mid-February, much later than previous seasons, and activity remained very low throughout, with community syndromic indicators not reaching the baseline warning threshold during the season. The peak GP influenza-like illness consultation rates in 2011/12 were the lowest since surveillance began in Northern Ireland in 2000. No one age-group appeared predominantly affected, with low levels of activity in all age groups, however, GP consultation rates increased in both children and adults.Influenza A (H3) was the predominant strain of the virus circulating, with small numbers of the influenza B strain circulating later in the season. Unlike the 2010/11 season when Influenza A (H1N1)2009 strain dominated in Northern Ireland, there were no detections of this subtype in 2011/12; virological activity generally corresponded to clinical activity.There were however, patients with confirmed influenza admitted to Intensive care units, across Northern Ireland during the season. Numbers were low, the average age of these patients increased compared with the previous season and one fatality was reported in this group.The proportion of over 65 year olds who received the 2011/12 seasonal influenza vaccine was 77.0%, and in those in a clinical risk group aged under 65 years was 81.7%, both of these vaccination uptake figures were a slight increase on the previous year. Influenza vaccine uptake in frontline healthcare workers also increased marginally this season to 20.8%, as did the proportion of pregnant women vaccinated during the season.

STI Surveillance in Northern Ireland 2012

This report aims to provide an overview of STI epidemiology in Northern Ireland by collating and analysing information from a number of sources. Although it reflects epidemiological trends over time, its main focus will be on data collected in 2011.

HIV surveillance in Northern Ireland 2012

This report aims to provide an overview of HIV epidemiology in Northern Ireland by collating and analysing information from a number of sources. Although it reflects epidemiological trends over time, its main focus will be on data collected in 2011.Following recent ONS guidance on data disclosure, where the number of any category of episodes in any one year is between one and four, this is reported either within a cumulative figure, or as an asterix. In addition, where the anonymised figure can be deduced from the totals, the next smallest figure will also be anonymised.

C. difficile surveillance quarterly report: October - December 2012

This quarterly report provides epidemiological data on C. difficile in Northern Ireland, and includes key points, a comprehensive�overview of all C. diff infections, rates, trends, age-specific information�and statistical process control charts. The report also provides information on surveillance methods and data for each hospital and Health and Social Care Trust in Northern Ireland.

S.aureus bacteraemia surveillance quarterly report: October - December 2012

This quarterly report provides epidemiological data on�S. aureus�in Northern Ireland, including overall infection�figures as well as those specific to MRSA and MSSA. The report highlights key points, rates, trends and statistical process control charts. The report also provides information on surveillance methods and data for each hospital and Health and Social Care Trust in Northern Ireland

Temporal distribution of dengue virus serotypes in Colombian endemic area and dengue incidence: re-introduction of dengue-3 associated to mild febrile illness and primary infection

We have investigated the temporal distribution of dengue (DEN) virus serotypes in the department (state) of Santander, Colombia, in relation to dengue incidence, infection pattern, and severity of disease. Viral isolation was attended on a total of 1452 acute serum samples collected each week from 1998 to 2004. The infection pattern was evaluated in 596 laboratory-positive dengue cases using an IgG ELISA, and PRNT test. The dengue incidence was documented by the local health authority. Predominance of DEN-1 in 1998 and DEN-3 re-introduction and predominance in 2001-2003 coincided with outbreaks. Predominance of DEN-2 in 2000-2001 coincided with more dengue hemorrhagic fever (DHF). DEN-4 was isolated in 2000-2001 and 2004 but was not predominant. There was an annual increase of primary dengue infections (from 13.7 to 81.4%) that correlated with frequency of DEN-3 (r = 0.83; P = 0.038). From the total number of primary dengue infections DEN-3 (81.3%) was the most frequent serotype. DHF was more frequent in DEN-2 infected patients than in DEN-3 infected patients: 27.5 vs 10.9% (P < 0.05). DEN-3 viruses belonged to subtype C (restriction site-specific-polymerase chain reaction) like viruses isolated in Sri-Lanka and other countries in the Americas. Our findings show the importance of continuous virological surveillance to identify the risk factors of dengue epidemics and severity.

Surveillance of influenza in Northern Ireland 2012-2013

The 2012/13 influenza season started earlier than in 2011/12; however it lasted longer, with GP consultation rates being elevated for approximately four months. Clinical indices began to increase in late December and peaked in early January, with the only two instances of community syndromic indicators exceeding the baseline threshold occurring in this month. GP influenza-like illness consultation rates in 2012/13 were higher than those in the 2011/12 season for the majority of the season but remained low overall.Overall no one age-group appeared predominantly affected; however, older adults predominated during the peak period, with rates increasing in children during February. Rates for those aged 65 and over increased late in the season, and this was associated with influenza outbreaks in care homes for the elderly.

HIV surveillance in Northern Ireland 2013 : An analysis of data for the calendar year 2012.

This report aims to provide an overview of HIV epidemiology in Northern Ireland by collating and analysing information from a number of sources. Although it reflects epidemiological trends over time, its main focus will be on data collected in 2012.

Surveillance of Influenza in Northern Ireland 2013-2014

�The 2013/14 influenza season started later than in 2012/13, it did not last as long and was noted at generally lower levels throughout than the previous season. Clinical indices began to increase in early January and peaked in mid-March, with community syndromic indicators not exceeding the baseline threshold at any time during the season. GP influenza-like illness consultation rates in 2013/14 were lower than those in the 2012/13 season for the majority of the season and remained low overall.Overall no one age group appeared predominantly affected with rates fluctuating throughout the season. The highest rate overall however was noted among the youngest age group during the peak period.

S. aureus bacteraemia surveillance quarterly report: October-December 2010

This quarterly report provides epidemiological data on�S. aureus�in Northern Ireland, including overall infection�figures as well as those specific to MRSA and MSSA. The report highlights key points, rates, trends and statistical process control charts. The report also provides information on surveillance methods and data for each hospital and Health and Social Care Trust in Northern Ireland.