Looking at some reporting done on prison populations, I think there's evidence to suggest that homosexuality is not the result of an infection.
In theory, the whole notion of a gay germ is predicated on the idea that it has a life cycle in which it alters a persons perceptions and behavior to engage in sexual acts with others in such a manner that allows it to inoculate others and spread. In theory the best place for such a germ to spread would be a prison, due to the close quarters and lack of alternative sexual outlets and the fact that such an infection is evidently cryptic (there's no talk of a "homo flu" the way there is talk of a seroconversion flu in the acquisition of HIV) and so would not be opposed by whatever healthcare apparatus is already in place. Gay and trans people are disproportionately more likely to be the target of rape (either by prisoners or guards), so if this germ were real and around, one would expect it to gradually increase the rates of same-sex attraction in prison populations.
Male-male sexuality in prison, from Wikipedia:
Male-male prison rape, from Wikipedia:
This sounds like paradise for the kind of infection described above. But as noted, the majority who participate in that do so as self-identified heterosexuals, who visualize women, etc. Those who do end up questioning their sexuality or gender identity seem much more likely to be suffering from PTSD and, well, ignorance about how some of those things work. I think there may be the odd person who may have a latent gay or bisexual orientation they lack awareness of until they encounter more direct same-sex experiences, but this is conjecture.
Another indicator of whether a gay germ exists would be to see if the amount of same-sex behavior increases outside of prison. The most I could find on that idea was here:
From the Abstract:
From the Discussion:
So, they examined the incarceration history of 564 young black men as a predictor of higher risk sexual behaviors, one of which under examination was the amount of same-sex partners. The results returned a p value of 0.23, which for all intents and purposes means that a history of incarceration did not influence the rate at which the men had sex with other men (at least not outside prison). If there was a gay germ, one would at least expect a history of incarceration to alter their perceptions and behavior post-exposure (even if such an exposure was not sexually transmitted but through other means in close quarters); in reality we don't see anything of the sort. So as far as I can tell the hypothesis is invalidated. One may have an objection to how I've construed and modeled a theoretical homosexuality-inducing pathogen, but if life is designed then the designer of a gay germ would have to have been a goofball not to exploit the types of dynamics indicated above.
In theory, the whole notion of a gay germ is predicated on the idea that it has a life cycle in which it alters a persons perceptions and behavior to engage in sexual acts with others in such a manner that allows it to inoculate others and spread. In theory the best place for such a germ to spread would be a prison, due to the close quarters and lack of alternative sexual outlets and the fact that such an infection is evidently cryptic (there's no talk of a "homo flu" the way there is talk of a seroconversion flu in the acquisition of HIV) and so would not be opposed by whatever healthcare apparatus is already in place. Gay and trans people are disproportionately more likely to be the target of rape (either by prisoners or guards), so if this germ were real and around, one would expect it to gradually increase the rates of same-sex attraction in prison populations.
Male-male sexuality in prison, from Wikipedia:
Prison sexuality for males has been studied since the 1930s. Research is lacking on consensual sex because most research done has focused on coercion.[3] Sexual abuse is more common among male inmates. Men sexually abuse others to establish dominance, power and to maintain their masculinity.[6] Men who are physically weaker will offer consensual sex in exchange for protection, security, goods or support.[3]
Heterosexual men in prison view their homosexual acts as being "situation specific" and may not consider themselves bisexual. These men often describe how they imagine being with a woman while taking part in sexual activity with a male inmate. During masturbation, they picture past sexual experiences with women.[9] They take part in homosexual activity due to having no “heterosexual outlets”.[6]
Male-male prison rape, from Wikipedia:
Prison is a community sexologically characterized by overt masturbation and by homosexual couplings that may be consensual, coercive or assaultive (rape).[18] Prison rape is defined differently from state to state but is understood to be non-consensual or unwanted sexual contact between individuals.[19] Prison rape can be between inmates or inmates and staff of the prison. This is a form of sexuality because these individuals use their capacity for sexual feelings to intimidate or control their victims which causes sociological properties of the prison to change.[20]
Prisoners have two overarching reasons to rape a victim, one is to satisfy their overt sexual and need based desires that self pleasure can not. The second is to use the assault as a sort of intimidation factor to grant the rapist power in a place where these actions generally go unpunished. In prison, the phrase "booty bandit" is used to describe such an inmate that would rape another (in the male case). There seems to be no shown correlation that men who are abusive to their partners outside of prison are more likely to be rapist in prisons. Such men are not known to have history of sexual assault before prison.[18]
In 2003, for the first time ever, the United States government moved to protect prisoners from sexual violence. With pressure for human rights groups, the US House of Representatives and Senate unanimously passed the Prison Rape Elimination Act (PREA) to protect prisoners from sexual violence.[20]
...
Prospective slaveholders will sometimes use intimidating innuendo, as opposed to overt threats of violence, which the prospective slave unwillingly accepts, thereby disguising the coercive nature of the sexual activity from even the enslaver.[23] Victims might not even see themselves as being coerced, if the abuse is negotiated as repayment for a debt. The trauma of the sexual violations often affects men as it threatens their sense of masculinity, gender identify and sexual orientation.[24] The HRW report contains an account in which an inmate is feeling this way.[25] It is argued that in prison, consent is inherently illusory.
This sounds like paradise for the kind of infection described above. But as noted, the majority who participate in that do so as self-identified heterosexuals, who visualize women, etc. Those who do end up questioning their sexuality or gender identity seem much more likely to be suffering from PTSD and, well, ignorance about how some of those things work. I think there may be the odd person who may have a latent gay or bisexual orientation they lack awareness of until they encounter more direct same-sex experiences, but this is conjecture.
Another indicator of whether a gay germ exists would be to see if the amount of same-sex behavior increases outside of prison. The most I could find on that idea was here:
Elevated Sexual Risk Behaviors among Post-Incarcerated Young African American Males in the South - PMC
The dramatic racial disparities in the rates of HIV/STIs among African Americans make understanding broader structural factors that increase the risk for HIV/STIs crucial. The current study of young 564 African American men attending sexually ...
www.ncbi.nlm.nih.gov
From the Abstract:
The dramatic racial disparities in the rates of HIV/STIs among African Americans make understanding broader structural factors that increase the risk for HIV/STIs crucial. The current study of young 564 African American men attending sexually transmitted infection (STI) clinics investigated whether those who had ever been incarcerated reported recent sexual behaviors relatively more risky than their counterparts who had never been incarcerated. Participants were recruited from clinics treating STIs in three southern U.S. cities. Males 15–23 years of age who identified as Black/African American and reported recent (past two months) sexual activity were eligible. Linear mixed-effects models and Generalized Estimating Equation (GEE) models were used to assess associations between baseline incarceration history and sexual risk behavior over a 6-month follow-up period. Mean age was 19.6 years (SD=1.87). At baseline, 240 (42.6%) men reported history of incarceration. Incarceration history predicted several risk behaviors over a 6-month follow-up period. Compared to those with no incarceration history, men previously incarcerated reported a desire to conceive a pregnancy (β=.40, p=.02), were less likely to have used a condom at last sex act (OR=.91, p=.02) and were more likely to have used drugs and alcohol before sex in the past two months (β=.69, p<.001; β=.41, p<.001). A history of incarceration may influence the sexual risk behavior of young African American males. Prevention programs and interventions should intensify support for post-incarceration African American males to help mitigate this behavior.
From the Discussion:
There were no significant associations for STI outcomes, sex with a male partner, number of sex partners, or having sex in exchange for money.
So, they examined the incarceration history of 564 young black men as a predictor of higher risk sexual behaviors, one of which under examination was the amount of same-sex partners. The results returned a p value of 0.23, which for all intents and purposes means that a history of incarceration did not influence the rate at which the men had sex with other men (at least not outside prison). If there was a gay germ, one would at least expect a history of incarceration to alter their perceptions and behavior post-exposure (even if such an exposure was not sexually transmitted but through other means in close quarters); in reality we don't see anything of the sort. So as far as I can tell the hypothesis is invalidated. One may have an objection to how I've construed and modeled a theoretical homosexuality-inducing pathogen, but if life is designed then the designer of a gay germ would have to have been a goofball not to exploit the types of dynamics indicated above.