 Financial strains may also be more accentuated as one partner becomes ill and potentially less able or unable to work.Research involving serodiscordant couples has offered insights into how the virus is passed and how individuals who are HIV positive may be able to reduce the risk of passing the virus to their partner.Experts predict that there are thousands of serodiscordant couples in the US who wish to have children, and researchers report a growing stream of calls from these couples wanting reproductive help.