SA Health has identified those who had contact with the patient, with seven people directed to receive clearance antibiotics.
It comes only days after a toddler from regional South Australia died after contracting meningococcal.
SA Health said on Tuesday that a two-year-old from rural SA had contracted the disease, with the strain identified as serogroup B.
So far this year, there have been eight cases of meningococcal reported in SA, compared with six cases recorded at the same time last year.
All of the cases in 2022 have been identified as serogroup B.
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