By Natalie Grover LONDON (Reuters) -British authorities are recommending gay and bisexual men at higher risk of exposure to monkeypox should be offered a vaccine, as the outbreak of the viral disease gathers pace mostly in Europe. Although anyone can contract monkeypox, data from the outbreak suggests the majority of transmission is occurring within the sexual networks of gay, bisexual and other men who have sex with men, according to UK Health Security Agency (UKHSA). A person’s eligibility would depend on a plethora of factors but would be similar to the criteria used to assess those eligibl…