Each year, thousands of babies die suddenly and unexpectedly, and more than 3,300 young lives were lost in 2020. Rates remained stubbornly high in the first year of the Covid-19 pandemic, even as overall infant mortality dropped to a record low.
A study published Monday in the journal Pediatrics found that the rate for Black babies spiked in particular, widening an already stark disparity.
About 1 out of every 6 infant deaths were considered sudden unexpected infant deaths, or SUIDs, a broad classification of deaths that includes sudden infant death syndrome, known as SIDS, along with accidental suffocation and strangulation in bed and other unknown causes.
While the SUID rate for White babies dropped to the lowest it has been since 2017, the rate for Black babies in 2020 was the highest it has been since then. Rates that were already about two times higher for Black babies in 2017 grew to nearly three times higher in 2020, the study found.
Sharyn Parks Brown, an epidemiologist with the US Centers for Disease Control and Prevention\u2019s Division of Reproductive Health and co-author of the study, said the research team reanalyzed the data a couple of times to be sure they were interpreting the findings correctly.
For decades, SUID rates had stayed consistent within each racial and ethnic group and were always highest among American Indian infants. But in 2020, the rate among Black infants surpassed that of American Indian infants.
\u201cWe would typically \u2013 ideally \u2013 look at five years of data in order to see any sort of trend emerging. So, these are very preliminary findings,\u201d Parks Brown said. \u201cBut this is something that we\u2019re going to have to continue monitoring.\u201d
In a commentary responding to the research, physicians said that the high rates of sudden unexpected infant deaths in the United States \u2013 and growing disparities \u2013 \u201creflect our societal failures.\u201d
Socioeconomic disparities \u201cnot only result in limited access to health care and education, but also in many families not having a stable, safe place for their infants to sleep,\u201d they wrote.
Untangling underlying causes
In 2020, 41% of all sudden unexpected infant deaths were attributed specifically to SIDS, 27% were identified to be accidental suffocation and strangulation in bed, and 31% were classified as an unknown cause.
Deaths attributed specifically to SIDS jumped between 2019 and 2020, rising from the fourth leading cause of infant mortality to the third.
But this particular trend might highlight just how much we don\u2019t know about these deaths, the new study suggests.
The lines between the three classifications within the SUID category are blurry, and the proportions have shifted over the years. Experts say there\u2019s been wide variation in how medical examiners and coroners code them, and they\u2019re less distinct than they may seem.
\u201cThe root causes of, and distinction between, SIDS and an unknown cause of death are poorly defined,\u201d said Cheryl L. Clark, associate director of epidemiology, evaluation and metrics at the Association of Maternal and Child Health Programs, who was not involved in the new study.
Individuals responsible for death certification have convened for a couple key meetings in recent years with specific intent to find consistency in the practice. And according to the new study, the unexpected increase in SIDS deaths in 2020 is most likely a result of shifting diagnostic criteria.
While the SIDS rate increased about 15% from 2019 to 2020, the broader SUID rate \u2013 which also includes deaths attributed to accidental suffocation and other unknown causes \u2013 increased only 3% in that year, an increase that\u2019s not considered statistically significant, the researchers found.
Still, the latest data emphasizes why continued focus \u2013 and better understanding \u2013 of the topic is important.
\u201cIn some ways, it was reassuring that the SUID rate didn\u2019t increase,\u201d Parks Brown said.
\u201cBut it just further emphasizes what we\u2019ve been seeing over the past couple of decades: We\u2019re not successfully moving the needle on reducing these deaths.\u201d
And untangling the specific causes behind all sudden unexpected infant deaths is critical.
\u201cThe bottom line is that you can\u2019t prevent something if you don\u2019t know what causes it,\u201d she said. \u201cIt\u2019s important to figure out what\u2019s happened in each death. That includes doing a thorough autopsy and getting a really detailed death scene investigation to find out what happened to the infant.\u201d
Focus on safe sleep
Despite the attempt to better differentiate within the broader category of sudden unexpected infant deaths, experts say there\u2019s a critical underlying thread.
\u201cAlmost all SUID deaths have at least one unsafe sleep risk factor. More than 95% of them,\u201d said Dr. Rebecca Carlin, a pediatrician with the Columbia University Vagelos College of Physicians and Surgeons.
This could include an infant sleeping on their stomach, sleeping in a parent\u2019s bed instead of a crib, having soft bedding or pillows in the crib, or tobacco use by the parents.
These unsafe sleep practices become risk factors because they decrease how easy it is for infants to arouse when they need to, typically every couple of hours, said Carlin, who co-authored the commentary published alongside the study Monday.
\u201cThere\u2019s almost always one \u2013 and often multiple \u2013 risk factors that are really avoidable with additional societal assistance,\u201d she said.
\u201cBeing a new parent is hard. And it\u2019s hard to talk about these issues without talking about the supports that we give new parents as a society.\u201d
Going back to work six weeks or sooner after a child is born and still waking up every three hours with them isn\u2019t really feasible, she said. It\u2019s understandable why parents would turn to unsafe sleep practices in an effort to get their child to sleep longer.
\u201cFunding to adequately assess and support changes required to address root causes of adverse health and inequitable societal conditions and systems that disproportionately impact Black and Indigenous communities is essential, focusing on community-led efforts that may increase protective factors and reduce risk,\u201d said Sabra Anckner, associate director for clinical and community collaboration at the Association of Maternal and Child Health Programs, who wasn\u2019t involved in the new study.
Many socioeconomic factors that disproportionately put Black babies and their families at risk for poor health outcomes overall were only exacerbated during the pandemic, experts say. For those families with infants, these stressors could have seeped in and affected safe sleep habits.
\u201cSafe sleep is hard,\u201d said Judy Bannon, CEO and founder of Cribs for Kids, a national group that provides cribs for those in need and advocates for safe infant sleep practices and wasn\u2019t involved in the new research.
Experts agree that continued education and community support to reinforce safe sleep practices is key, and time spent in the hospital post-partum is a critical opportunity.
Among other programs, Cribs for Kids has a hospital certification program that has recognized hundreds of hospitals nationwide for the commitment to safe sleep practices.
It also has a public safety initiative, working with local EMS of law enforcement personnel to keep an eye out for where a baby\u2019s sleeping when they\u2019re in a house for any reason.
\u201cIt\u2019s a matter of parents hearing about it from every place that they go,\u201d Bannon said.<\/p>\n\n\n\n