Current guidelines state that if one or more of the following risk factors is present, then the woman should be treated with intrapartum antibiotics:

GBS bacteriuria during this pregnancy
History of GBS disease in a previous infant
Intrapartum fever (≥38 °C)
Preterm labour (<37 weeks)
Prolonged rupture of membranes (>18 hours)This protocol results in the administration of intrapartum antibiotics to 15–20% of pregnant women and prevention of 65–70% of cases of early onset GBS sepsis. Group C
This group includes S. equi, which causes strangles in horses, and S. zooepidemicus—S. equi is a clonal descendant or biovar of the ancestral S. zooepidemicus—which causes infections in several species of mammals, including cattle and horses. S. dysgalactiae subsp. dysgalactiae is also a member of group C, beta-haemolytic streptococci that can cause pharyngitis and other pyogenic infections similar to group A streptococci. Group D (enterococci)
Many former group D streptococci have been reclassified and placed in the genus Enterococcus (including E. faecalis, E. faecium, E. durans, and E. avium). For example, Streptococcus faecalis is now Enterococcus faecalis. E. faecalis is sometimes alpha-hemolytic and E. faecium is sometimes beta hemolytic.The remaining nonenterococcal group D strains include Streptococcus gallolyticus, Streptococcus bovis, Streptococcus equinus and Streptococcus suis. Nonhemolytic streptococci rarely cause illness. However, weakly hemolytic group D beta-hemolytic streptococci and Listeria monocytogenes (which is actually a gram-positive bacillus) should not be confused with nonhemolytic streptococci. Group F streptococci
Group F streptococci were first described in 1934 by Long and Bliss amongst the "minute haemolytic streptococci".
In humans, Erysipelothrix rhusiopathiae infections most commonly present in a mild cutaneous form known as erysipeloid  or fish poisoning. E. rhusiopathiae can cause an indolent cellulitis, more commonly in individuals who handle fish and raw meat. Erysipelothrix rhusiopathiae also causes Swine Erysipelas. It is common in domestic pigs and can be transmitted to humans who work with swine. It gains entry typically by abrasions in the hand. Bacteremia and endocarditis are uncommon but serious sequelae. Due to the rarity of reported human cases, E. rhusiopathiae infections are frequently misidentified at presentation. Diagnosis
Violaceous swelling with severe pain but without pus (Which differentiates from pus forming streptococcal and staphylococcal erysipelas)

Erysipeloid of Rosenbach
Erysipeloid of Rosenbach is a cutaneous condition most frequently characterized by a purplish marginated swelling on the hands. : 264  The eponym Rosenbachs disease is in reference to the milder type of the condition and is named after Friedrich Julius Rosenbach. Early work on the condition in US fishermen was carried out by Klaunders and colleagues. Treatment
The treatment of choice is a single dose of benzathine benzylpenicillin given by intramuscular injection, or a five-day to one-week course of either oral penicillin or intramuscular procaine benzylpenicillin. Erythromycin or doxycycline may be given instead to people who are allergic to penicillin. E. rhusiopathiae is intrinsically resistant to vancomycin. See also
Erysipeloid of Rosenbach

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