The mother and child did not have the measles vaccine, according to the Health Ministry, while the father had not completed the entire vaccination series.
During the first 22 weeks of this year there were 175 confirmed cases of the mosquito-borne virus in the country. Of these, 27 are women who contracted the virus during pregnancy.
Health officials reported that 93 percent of the people who died from influenza last year were not vaccinated, despite the fact that because all were members of high-risk groups, they were eligible to receive the vaccination for free.
On average 1,100 Costa Rican women are diagnosed with breast cancer and some 250 of them die each year. These figures are the highest in Central America and fourth in Latin America.