Will More Sexual Partners Lead to Higher Risk of HIV? A New Study Says No

Conventional wisdom has suggested that the more same-gender partners a man has, the more likely he is to engage in risky behaviors that could lead to HIV transmission, but a new study casts doubt on that assumption.

Researchers at the BC Centre for Excellence in HIV/AIDS wanted to examine the behaviors of men who have sex with men, or MSM. Specifically they aimed to understand whether a man’s reported number of sexual partners impacted how he approached sexual encounters.

Did more partners mean men were ambivalent to safe sex, or was it the opposite?

Researchers divided a population sample of Vancouver men by how many partners they’d had in the previous six months and then studied the strategies they practiced to safeguard themselves from contracting HIV.

Of course, condom use is a primary strategy. They remain one of the most effective and best methods for preventing HIV transmission and other sexually transmitted infections, such as syphilis and gonorrhea.

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During the Canada Post strike announced September 25, 2025, the following measures will be undertaken to minimize service disruption to BC-CfE clients and providers.

  • The BC-CfE Laboratory has transitioned to private courier for delivery of outgoing reports and documents. Results required urgently can be faxed upon request. (Lab Contact Information: Phone 604-806-8775; FAX 604-806-9463)
  • The BC-CfE Drug Treatment Program (DTP) will fax outgoing forms and documents to the provider’s office. (DTP Contact Information: Phone 604-806-8515; FAX 604-806-9044)
  • St. Paul’s Hospital Ambulatory Pharmacy has transitioned to private courier for delivery of medications. We recommend requesting medication at least 2 weeks in advance in case of delivery delays, particularly to rural/remote parts of BC. (Contact Information: Phone 1-800-547-3622; FAX 604-806-8675)

During the Canada Post strike, we recommend that documents be faxed or couriered to our sites, versus utilization of regular mail service

The BC-CfE Laboratory is streamlining reporting processes for certain tests in order to simplify distribution and record-keeping, and to ensure completeness of results. Beginning September 2, 2025, results for the ‘Resistance Analysis of HIV-1 Protease and Reverse Transcriptase’ (Protease-RT) and ‘HIV-1 Integrase Resistance Genotype’ tests will be combined into a single ‘HIV-1 Resistance Genotype Report’.
For more details and example reports, please click on the button below