Featured Research

from universities, journals, and other organizations

Different HIV Rates Among Gay Men And Straight People Not Fully Explained By Sexual Behavior

Date:
September 14, 2007
Source:
BMJ Specialty Journals
Summary:
Differences in sexual behaviors do not fully explain why the US HIV epidemic affects gay men so much more than straight men and women, claims research published in the journal Sexually Transmitted Infections. In 2005, over half of new HIV infections diagnosed in the US were among gay men, and up to one in five gay men living in cities is thought to be HIV positive.

Differences in sexual behaviours do not fully explain why the US HIV epidemic affects gay men so much more than straight men and women, claims research published ahead of print in the journal Sexually Transmitted Infections.

Related Articles


In 2005, over half of new HIV infections diagnosed in the US were among gay men, and up to one in five gay men living in cities is thought to be HIV positive.

Yet two large population surveys showed that most gay men had similar numbers of unprotected sexual partners per year as straight men and women.

US researchers applied a series of carefully calculated equations in different scenarios to study the rate at which HIV infection has spread among gay men and straight men and women.

They used figures taken from two national surveys to estimate how many sex partners gay men and straight men and women have, and what proportion of gay men have insertive or receptive anal sex, or both.

They then set these figures against accepted estimates of how easily HIV is transmitted by vaginal and anal sex to calculate the size of the HIV epidemic in gay men and straight men and women.

The results showed that for the straight US population to experience an epidemic of HIV infection as great as that of gay men, they would need to average almost five unprotected sexual partners every year.

This is a rate almost three times that of gay men.

But to end the HIV epidemic, gay men would need to have rates of unprotected sex several times lower than those currently evident among the straight population. This is because transmission rates are higher for anal sex than they are for vaginal sex, say the authors.

But "role versatility," whereby people adopt both "insertive" and "receptive roles," also plays a part, they add.

A gay man can be easily infected through unprotected receptive sex, and then infect someone else through insertive sex.

Gay men are therefore far more susceptible to the spread of the virus through the population, even with the same numbers of unprotected sexual partners.


Story Source:

The above story is based on materials provided by BMJ Specialty Journals. Note: Materials may be edited for content and length.


Cite This Page:

BMJ Specialty Journals. "Different HIV Rates Among Gay Men And Straight People Not Fully Explained By Sexual Behavior." ScienceDaily. ScienceDaily, 14 September 2007. <www.sciencedaily.com/releases/2007/09/070913132930.htm>.
BMJ Specialty Journals. (2007, September 14). Different HIV Rates Among Gay Men And Straight People Not Fully Explained By Sexual Behavior. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2007/09/070913132930.htm
BMJ Specialty Journals. "Different HIV Rates Among Gay Men And Straight People Not Fully Explained By Sexual Behavior." ScienceDaily. www.sciencedaily.com/releases/2007/09/070913132930.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) — The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Newsy (Nov. 25, 2014) — Need another reason to eat yogurt every day? Researchers now say it could reduce a person's risk of developing type 2 diabetes. Video provided by Newsy
Powered by NewsLook.com
Madagascar Working to Contain Plague Outbreak

Madagascar Working to Contain Plague Outbreak

AFP (Nov. 24, 2014) — Madagascar said Monday it is trying to contain an outbreak of plague -- similar to the Black Death that swept Medieval Europe -- that has killed 40 people and is spreading to the capital Antananarivo. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Are Female Bosses More Likely To Be Depressed?

Are Female Bosses More Likely To Be Depressed?

Newsy (Nov. 24, 2014) — A new study links greater authority with increased depressive symptoms among women in the workplace. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins