It a very bad year for clostridial diseases and also pasteurella. If your kids have had the inital double dose of Lambivac it may be wise to booster them again, as goats need a 6 monthly booster rather than the annual one for sheep. I would also consider vaccinating separately with Ovipast to protect them against (most) strains of pasteurella.
I recently lost a kid to enterotoxaemia, even though he had been properly lambivac-ed in early summer. I have now re-boostered all my remaining kids, and have just ordered Ovipast too.