higher rate of maternal infection history med.

[Baskakova]

Добрый день!!

Помогите, пожалуйста, правильно перевести 2 словосочетания:

higher rate of maternal infection history

delayed access to the service

Вот контекст:

RESULTS: The frequency of positive serology (IgM) for cytomegalovirus was 29.4% in children with intrahepatic cholestasis and 28.5% in children with extrahepatic cholestasis. In comparison with group IIB, group IIA presented a higher rate of maternal infection history. The patients in group IIA demonstrated a delayed access to the service in comparison with group IA. The groups did not demonstrate any significant differences regarding the onset age of jaundice, choluria and fecal acholia, birth weight and ponderal gain.

[grachik]

Динамика повышения процента зараженности (инфицирования) от матерей

[Baskakova]

понятно. спасибо!!