Should household contacts of Haemophilus influenza invasive disease patients be given immediate antibiotic prophylaxis?

Since the use of conjugated Hib vaccine in 1987, invasive type B disease is quite rare, and in my adult population, unheard of. When I see an adult hospitalized with Haemophilus influenzae growth from sputum or blood culture, it creates much anxiety to immediately prophylax all household members, not a small consideration when there is a large household and rifampin requires a review of each person's entire medication list. Prescribing rifampin for 4 days can cause GI side effects as well. CDC data 2015 - 2019* states an incidence of invasive B disease 3 cases / 10 million population. Given these statistics, Is it reasonable to wait until the immunotyping result is available before prescribing rifampin to an entire household? Reference: *Current Epidemiology and Trends in Invasive Haemophilus influenzae Disease—United States, 2009–2015. Soeters, Heidi M. Clin Infect Dis. 67(6):881-889 URL : https://stacks.cdc.gov/view/cdc/59723