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Trends in HIV infection surveillance data among men who have sex with men in Norway, 1995-2011.

Jakopanec I, Grjibovski AM, Nilsen Ø, Blystad H, Aavitsland P - BMC Public Health (2013)

Bottom Line: No significant trends over time in overall median age (36 years) were observed.The proportion of MSM, presenting with either AIDS or HIV illness, decreased over time, while asymptomatic and acute HIV illness increased (p for trend=0.034 or less).The simultaneous increase in STI co-infections indicates risky sexual behaviour and a potential to spread both HIV and other sexually transmitted infections.

View Article: PubMed Central - HTML - PubMed

Affiliation: Norwegian Institute of Public Health, Oslo, Norway. irena.jakopanec@guest.arnes.si

ABSTRACT

Background: Recent reports on the growing HIV epidemic among men who have sex with men (MSM) in the EU/EEA area were accompanied by an increase of reported HIV among MSM in Oslo, Norway in 2003. Our study with data from 1995 to 2011 has described the recent trends of HIV among MSM in Norway and their socio-demographic and epidemiological characteristics.

Methods: The data were collected from the Norwegian Surveillance System for Communicable Diseases. Cases were described by age, place of infection, clinical presentation of HIV infection, STI co-infection and source partner. We used simple linear regression to estimate trends over time.

Results: During the study period, 991 MSM, aged from 16 to 80 years, were newly diagnosed with HIV. No significant trends over time in overall median age (36 years) were observed. Most of the MSM (505, 51%) were infected in Oslo. In the years 1995-2002, 30 to 45 MSM were diagnosed with HIV each year, while in the years 2003-2011 this increased to between 56 and 97 cases. The proportion of MSM, presenting with either AIDS or HIV illness, decreased over time, while asymptomatic and acute HIV illness increased (p for trend=0.034 or less). STI co-infection was reported in 133 (13%) cases. An overall increase of syphilis co-infected cases was observed (p for trend <0.001). A casual partner was a source of infection in 590 cases (60%).

Conclusions: Though the increases described could be attributed to earlier testing and diagnosis, no change in the median age of cases was observed. This indicates that it is likely that there has been an increase in HIV infections among MSM in Norway since 2003. The simultaneous increase in STI co-infections indicates risky sexual behaviour and a potential to spread both HIV and other sexually transmitted infections.

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Number of MSM diagnosed with HIV infection in 1995-2011 in Norway, by year of diagnosis and clinical symptoms.
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Figure 4: Number of MSM diagnosed with HIV infection in 1995-2011 in Norway, by year of diagnosis and clinical symptoms.

Mentions: Half of the cases were infected less than a year prior to being diagnosed (Table 1, Figure 1). The increase in infections in 2003 and 2004 (Figure 1) coincides with an increase of cases, infected by a casual partner (p for trend <0.001) (Figure 3). The majority of cases were asymptomatic at the time of diagnosis (597, 60%, Figure 4). Furthermore, the proportion of MSM presenting with either AIDS or HIV illness, decreased over time, however, the proportion of both asymptomatic and those with acute HIV illness increased (all with p for trend=0.034 or less).


Trends in HIV infection surveillance data among men who have sex with men in Norway, 1995-2011.

Jakopanec I, Grjibovski AM, Nilsen Ø, Blystad H, Aavitsland P - BMC Public Health (2013)

Number of MSM diagnosed with HIV infection in 1995-2011 in Norway, by year of diagnosis and clinical symptoms.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3585925&req=5

Figure 4: Number of MSM diagnosed with HIV infection in 1995-2011 in Norway, by year of diagnosis and clinical symptoms.
Mentions: Half of the cases were infected less than a year prior to being diagnosed (Table 1, Figure 1). The increase in infections in 2003 and 2004 (Figure 1) coincides with an increase of cases, infected by a casual partner (p for trend <0.001) (Figure 3). The majority of cases were asymptomatic at the time of diagnosis (597, 60%, Figure 4). Furthermore, the proportion of MSM presenting with either AIDS or HIV illness, decreased over time, however, the proportion of both asymptomatic and those with acute HIV illness increased (all with p for trend=0.034 or less).

Bottom Line: No significant trends over time in overall median age (36 years) were observed.The proportion of MSM, presenting with either AIDS or HIV illness, decreased over time, while asymptomatic and acute HIV illness increased (p for trend=0.034 or less).The simultaneous increase in STI co-infections indicates risky sexual behaviour and a potential to spread both HIV and other sexually transmitted infections.

View Article: PubMed Central - HTML - PubMed

Affiliation: Norwegian Institute of Public Health, Oslo, Norway. irena.jakopanec@guest.arnes.si

ABSTRACT

Background: Recent reports on the growing HIV epidemic among men who have sex with men (MSM) in the EU/EEA area were accompanied by an increase of reported HIV among MSM in Oslo, Norway in 2003. Our study with data from 1995 to 2011 has described the recent trends of HIV among MSM in Norway and their socio-demographic and epidemiological characteristics.

Methods: The data were collected from the Norwegian Surveillance System for Communicable Diseases. Cases were described by age, place of infection, clinical presentation of HIV infection, STI co-infection and source partner. We used simple linear regression to estimate trends over time.

Results: During the study period, 991 MSM, aged from 16 to 80 years, were newly diagnosed with HIV. No significant trends over time in overall median age (36 years) were observed. Most of the MSM (505, 51%) were infected in Oslo. In the years 1995-2002, 30 to 45 MSM were diagnosed with HIV each year, while in the years 2003-2011 this increased to between 56 and 97 cases. The proportion of MSM, presenting with either AIDS or HIV illness, decreased over time, while asymptomatic and acute HIV illness increased (p for trend=0.034 or less). STI co-infection was reported in 133 (13%) cases. An overall increase of syphilis co-infected cases was observed (p for trend <0.001). A casual partner was a source of infection in 590 cases (60%).

Conclusions: Though the increases described could be attributed to earlier testing and diagnosis, no change in the median age of cases was observed. This indicates that it is likely that there has been an increase in HIV infections among MSM in Norway since 2003. The simultaneous increase in STI co-infections indicates risky sexual behaviour and a potential to spread both HIV and other sexually transmitted infections.

Show MeSH
Related in: MedlinePlus