The number of combined cases of syphilis, gonorrhea and chlamydia in the United States rose to a record high last year, including an alarming jump in the rate of newborn deaths caused by congenital syphilis, according to figures released by the Centers for Disease Control and Prevention on Tuesday.

More than 2.4 million syphilis, gonorrhea and chlamydia infections were reported in the United States in 2018, an increase of more than 100,000 cases from the previous year, the center said in its annual Sexually Transmitted Disease Surveillance Report.

It attributed the increase to several factors, including a decline in condom use among young people and men who have sex with men; increased screening among some groups; and cuts to sexual health programs at the state and local level, which led to clinic closures and fewer opportunities for counseling or testing for sexually transmitted diseases.

There were more than 115,000 syphilis cases reported to the center in 2018, a 71 percent increase since 2014. That included a 22 percent increase from 2017 in the number of newborn deaths related to congenital syphilis, which is passed from mother to child during pregnancy, the center said on Tuesday.