Health1 day ago

Infant bleeding rates rise as more parents decline vitamin K shots, studies find

Coverage spectrum

Covered by 3 outlets, mostly left-leaning (67%).

3 articles in total. The spectrum counts each outlet once and leaves opinion out. How we measure bias

Image via The New York TimesHow images are chosen Report this image

Two studies published Thursday report that bleeding rates in US infants have risen since 2017 as more parents decline the vitamin K shot given at birth. The studies analyzed electronic health records for 5.2 million babies born from 2017 to 2025, according to the New York Post, which reports that about 4.5% had no documented shot. One study found a 347 percent increase in cases as fewer babies received the shot, the New York Times reports. The New York Post reports that bleeding episodes doubled within a year. Reuters reports that refusals accelerated under Health Secretary Robert F. Kennedy Jr. The shot prevents vitamin K deficiency bleeding, a rare but potentially fatal condition, the Post says.

Headline and summary written by Mantle’s AI from the coverage below, under published rules. Editors read every story. How this works

New to Mantle? It shows who is covering each story across the political spectrum, and highlights loaded words. How to read a storyHide the guide

The coverage spectrum counts the outlets covering a story at each of five points. A short or missing segment means that part of the spectrum is mostly quiet.

Governor Loaded verb“slams”It adds drama to what was said. The governor criticized the lawmakers; “slams” makes it sound like a fight.More neutral: criticizes lawmakers over budget delay

Highlights mark words that carry a judgement. Tap one to see why, and what a neutral writer would say. Here it is “criticizes”.

The 5-point spectrum

Far Left
Voices that strongly advocate for progressive policies and systemic change.
Left
Mainstream liberal perspectives focusing on social equality and regulation.
Center
Sources that prioritize neutral reporting and balanced viewpoints.
Right
Mainstream conservative perspectives focusing on market freedom and tradition.
Far Right
Voices that strongly advocate for conservative values and limited government.

How we measure bias

What happened

Key points

Each point shows who reports it, from Far Left to Far Right.

Two studies published Thursday report that bleeding rates in US infants have risen since 2017.
Reported byFar Left1Left1Right1See the outletsHide the outlets
Far Left
HuffPost
Left
The New York Times
Right
New York Post
As more parents decline the vitamin K shot given at birth, infant bleeding rates have risen, according to the studies.
Reported byFar Left1Left1Right1See the outletsHide the outlets
Far Left
HuffPost
Left
The New York Times
Right
New York Post
The studies analyzed electronic health records for 5.2 million babies born in the US from 2017 to 2025.
One outletNew York Post· Right
About 4.5% of those infants had no documented vitamin K shot.
One outletNew York Post· Right
One study found a 347 percent increase in cases as fewer babies received the shot.
One outletThe New York Times· Left

Show 2 more pointsShow fewer points

Reporting says vitamin K refusals accelerated under Health Secretary Robert F. Kennedy Jr.
One outletHuffPost· Far Left
A single vitamin K shot can prevent vitamin K deficiency bleeding, a rare but potentially fatal condition.
One outletNew York Post· Right

How each side tells it

Compare views

Every side reports that infant bleeding rates rose as more parents declined the vitamin K shot given at birth. The left-side outlets emphasize vaccine mistrust and Kennedy’s role, while the right-side outlet frames the refusals as a dangerous mistake against 60 years of medical advice.

the left
2 outlets
Both left-side headlines present the bleeding rise as linked to parents rejecting vitamin K shots, with HuffPost’s description adding Kennedy’s role and the wider mistrust of vaccines.
Infant Bleeding Surged as Parents Rejected Vitamin K Shots, Studies Find
The New York TimesLeftAll left-leaning headlines
the center
No coverage yet
No center outlet that Mantle follows has covered this story yet. That absence is part of the picture.
the right
1 outlet
The New York Post frames the rise as a dangerous parental mistake, stressing that rejecting the shot defies 60 years of medical recommendations and that vaccines are slipping too.
Life-threatening infant bleeding rates have doubled in a year as parents make Loaded modifier“dangerous mistake”Calls the parents’ choice a mistake, a judgement the studies as described do not state.More neutral: as more parents decline vitamin K shotsDisagree with this highlight?
New York PostRightAll right-leaning headlines

The words they chose

Language to notice

Words that carry a judgement beyond the facts. Tap a highlighted word anywhere on the page to see why.

Left1
staggering
Center
Has not covered this story.
Right2
troubling risedangerous mistake

In the outlets’ own words

Sensational language
staggeringMore neutral: 347 percent increase
The adjective adds drama that the reported percentage does not need.
One study found a staggering 347 percent increase in cases as fewer babies received the shot, which helps blood…
Used byThe New York Times (Left)
Sensational language
troubling riseMore neutral: rise
The adjective adds the outlet’s own judgement to the reported rise.
…warning that the shift away from the decades-old practice is coinciding with a troubling rise in potentially deadly bleeding episodes among infants.
Used byNew York Post (Right)
Loaded modifier
dangerous mistakeMore neutral: as more parents decline vitamin K shots
Calls the parents’ choice a mistake, a judgement the studies as described do not state.
Life-threatening infant bleeding rates have doubled in a year as parents make dangerous mistake
Used byNew York Post (Right)

See the full language guide

See for yourself

Side by side

What each side leads with and what it leaves out. Open a side to read its headlines.

From the left

2 outlets

Leads with

rising infant bleeding rates
parents refusing vitamin K shots
Kennedy’s role and vaccine mistrust

Leaves out

the 4.5% of infants with no recorded vitamin K shot
the doubling of bleeding episodes within a year

Reported by other sides, not found in this side’s coverage.

See the 2 headlines from the leftHide the headlines

HuffPostFar LeftReuters report
U.S. Infant Bleeding Episodes Jump As Vitamin K Refusals Rise, Two Studies Find
The refusals have accelerated under Health Secretary Robert F. Kennedy Jr. amid a wave of mistrust toward vaccines and other newborn interventions.
20 hr agoRead at HuffPost (opens in a new tab)
The New York TimesLeft
Infant Bleeding Surged as Parents Rejected Vitamin K Shots, Studies Find
One study found a Sensational language“staggering”The adjective adds drama that the reported percentage does not need.More neutral: 347 percent increaseDisagree with this highlight? 347 percent increase in cases as fewer babies received the shot, which helps blood clot.
1 day agoRead at The New York Times (opens in a new tab)

From the center

0 outlets

No center outlet that Mantle follows has covered this story yet. That absence is part of the picture.

From the right

1 outlet

Leads with

parents rejecting a routine newborn treatment
60 years of medical recommendations
broader decline in infant vaccination

Leaves out

the role of Health Secretary Robert F. Kennedy Jr. in the rise in refusals
the 347 percent increase reported in one study

Reported by other sides, not found in this side’s coverage.

See the headline from the rightHide the headlines

New York PostRight
Life-threatening infant bleeding rates have doubled in a year as parents make Loaded modifier“dangerous mistake”Calls the parents’ choice a mistake, a judgement the studies as described do not state.More neutral: as more parents decline vitamin K shotsDisagree with this highlight?
Vaccination rates aren't the only thing falling among the nation's youngest.
47 min agoRead at New York Post (opens in a new tab)

The stories you read build My Mix, a private picture of which sides cover the stories you choose, kept on this device. What is My Mix?

The left is Far Left and Left together. The right is Right and Far Right together. Every outlet keeps its own five-point rating.

Who reported it when

How the coverage built up

Left
First to report
The New York Times, Nov 5, 11:38 AM EST
Center
No report yet
From the outlets Mantle follows
Right
1 day later
Its first report, Nov 6, 11:45 AM EST

See the order the outlets reported inHide the order

The New York TimesLeftNov 5, 11:38 AM EST
HuffPostFar LeftNov 5, 3:36 PM EST
New York PostRightNov 6, 11:45 AM EST

Times are the ones the outlets published in their own feeds, in Eastern time. Opinion is left out.

Infant bleeding rates rise as more parents decline vitamin K shots, studies find

Coverage spectrum

Key points

Compare views

the left

the center

the right

Language to notice

In the outlets’ own words

Side by side

From the left

U.S. Infant Bleeding Episodes Jump As Vitamin K Refusals Rise, Two Studies Find

Infant Bleeding Surged as Parents Rejected Vitamin K Shots, Studies Find

From the center

From the right

Life-threatening infant bleeding rates have doubled in a year as parents make Loaded modifier“dangerous mistake”Calls the parents’ choice a mistake, a judgement the studies as described do not state.More neutral: as more parents decline vitamin K shotsDisagree with this highlight?

How the coverage built up

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