COVID-19 has disrupted health systems in almost all countries, according to a survey by the World Health Organization.
The data was collected between March and June.
Many routine appointments and screenings have been cancelled, while the pandemic has severely affected critical care including cancer treatment.
Middle and lower-income countries reported the most severe difficulties.
In more than half of countries, contraception and family planning was affected as well as treatment of mental health disorders and cancer treatment.
Life-saving emergency services were affected in a quarter of countries.