BackgroundThe Covid-19 pandemic limited access to health services in most countries, impacting negatively global health. Last March 2020 in Mozambique, a public state of emergency restrained people’s movements, reduced public services, and launched a national information campaign. The Alert Community for a Prepared Hospital implementation research, has been promoting access to maternal and child health care, at Marrere General Hospital and Marrere Health Centre, in Natikiri, Nampula, the city with the third highest incidence of Covid-19 in Mozambique. Our research aimed to assess the impact of Covid-19 on access to maternal and children health services in Nampula and estimate Alert Community for a Prepared Hospital project sustainability.MethodsMixed-methods research, descriptive, cross-sectional, and retrospective, using review of patient visits documentation, comparing March to May 2019 to same months in 2020, and interviews with health professionals, traditional birth attendants and patients. We involved two health centres and two hospitals. The two Marrere centres were Alert Community for a Prepared Hospital intervention centres, and the other two were control centres, compared using KrushKall Wallis, One-way Anova, mean and standard deviation tests.ResultsComparing 2019 maternal health services indicators with those from 2020, the intervention area had decreases of 28% in family planning visits, 26% in women in first ante-natal visits in the first trimester, and a 74% increase in home deliveries, all without statistical significance. The decrease in hospital maternity deliveries (4%) was statistically significant (p=0.046). The non-intervention area showed a decrease in women in first ante-natal visits in the first trimester (12%). Concerning child health, the intervention area had a 20% reduction in children presenting for vaccination and an 18% in children completely vaccinated, comparable to a reduction of 16% in the non-intervention area. Interviews revealed that most health professionals, traditional birth attendants and patients, have adequate knowledge about Covid-19. ConclusionOur results demonstrate negative collateral effects of Covid-19 on maternal and child health access and a deficient health information system in Mozambique. The Government’s media campaign promoting access to preventive health services, is not achieving its aim. The Alert Community project will need further research, to assess lasting effect on reducing the negative effects of Covid-19 on sexual and reproductive health.Trial registrationThis study was not registered in any data base.