We are now living in an era when infants born with genetic disorders such as Down Syndrome will disappear in some societies (see: "What kind of society do you want to live in?": Inside the country where Down syndrome is disappearing). Below is an excerpt from this article explaining this process. Read the whole article if you are so motivated.
With the rise of prenatal screening tests across Europe and the United States, the number of babies born with Down syndrome has significantly decreased, but few countries have come as close to eradicating Down syndrome births as Iceland. Since prenatal screening tests were introduced in Iceland in the early 2000s, the vast majority of women -- close to 100 percent -- who received a positive test for Down syndrome terminated their pregnancy. While the tests are optional, the government states that all expectant mothers must be informed about availability of screening tests, which reveal the likelihood of a child being born with Down syndrome. Around 80 to 85 percent of pregnant women choose to take the prenatal screening test....Using an ultrasound, blood test and the mother's age, the test, called the Combination Test [or Quadruple Test in England], determines whether the fetus will have a chromosome abnormality, the most common of which results in Down syndrome....Other countries aren't lagging too far behind in Down syndrome termination rates. According to the most recent data available, the United States has an estimated termination rate for Down syndrome of 67 percent (1995-2011); in France it's 77 percent (2015); and Denmark, 98 percent (2015). The law in Iceland permits abortion after 16 weeks if the fetus has a deformity -- and Down syndrome is included in this category
Here is more information from the Mayo Clinic web site about prenatal cell-free DNA screening (see: Prenatal cell-free DNA screening):
Prenatal cell-free DNA (cfDNA) screening, also known as noninvasive prenatal screening, is a method to screen for certain chromosomal abnormalities in a developing baby. During prenatal cell-free DNA screening, DNA from the mother and fetus is extracted from a maternal blood sample and screened for the increased chance for specific chromosome problems, such as Down syndrome, trisomy 13 and trisomy 18. This screening can also provide information about fetal sex and rhesus (Rh) blood type. Prenatal cell-free DNA screening is recommended for women who are at least 10 weeks pregnant and have adequate counseling regarding the options, benefits and limits of first and second trimester screening.
It's not my goal in this short note to discuss the ethical or moral issues surrounding the termination of pregnancies due to, for example, a fetus with genetic disorder such as Down Syndrome. To restate the obvious and in this era of increasingly sophisticated DNA testing, articles such as the one cited above will appear with increasing frequency across a wide range of genetic disorders. To some, the situation in Iceland calls to mind the practice of "negative eugenics" (see: Eugenics). To quote one sentence from this Wikipedia article: ...[E]ugenics is no longer ex post facto regulation of the living but instead preemptive action on the unborn. At the very least, we need more public and wide-ranging discussion of prenatal cfDNA testing as part of the larger discussion of the future of genomic testing.