30. Due to uncertainty. Sometimes there is concern after birth that an infant might have an infection, so the doctors give him a round of antibiotics just to be safe, and later, they get the results of the blood test and see there was no infection. In such a case, the infant is not considered ill at all and the bris may be performed right away.
31. Preventive treatment. Similarly, if an infant receives antibiotics because he is susceptible to infection, but he does not have an infection, he is not considered ill and may get a bris on time.
32. Recovered during treatment. If an infant had an infection and was treated with antibiotics, e.g., for ten days, but is completely recovered after seven days and is just continuing treatment for the last three days to prevent the infection from coming back, the seven-day wait can be counted from when the infant recovered. They do not need to wait seven days from the completion of the round of antibiotics (הגרשז''א, נשמת אברהם ח''ד יו''ד סי' רס''ב סק''א, אוצר הברית ח''ג עמ' קל''ז ).
