An IQR lower level of IL‐12p70 was associated with 10.9 (95% CI 2.5 to 46.7) higher odds of CRS, while lower levels of IL‐10, IL‐13, and MCP‐1 were associated with 77.5 (95% CI 6.9 to 876.8), 4.0 (95% CI 1.5 to 10.6), and 5.0 (95% CI1.6 to 15.7) higher odds of CRS per IQR difference in concentration. Here, CCL2 is linked to congenital rubella syndrome.