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abtran.bsky.social
Andrew Ba Tran
@abtran.bsky.social
2.2K followers 600 following 190 posts
Washington Post Investigative Data Reporter
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Reposted by Andrew Ba Tran
carlquintanilla.bsky.social
Page One.

@washingtonpost.com
January 6, 2026 at 11:35 AM
abtran.bsky.social
The @washingtonpost.com still sharing our data and how we did the work while other newsrooms pull back. Check out the gathered data on Github
#opendata #reproducibility #transparency bsky.app/profile/cait...
caitlingilbert.bsky.social Caitlin Gilbert @caitlingilbert.bsky.social · 9d
You can also use the map in the story to look up vaccination rates in your local schools! This was a HUGE data lift: we reviewed and mapped tens of thousands of individual schools’ data, assembling the most comprehensive public database. And we published this data here: github.com/washingtonpo...
Screenshot of interactive look-up tool map where you can see the vaccination rates of individual schools as well as county and statewide rates
December 31, 2025 at 4:15 PM
Reposted by Andrew Ba Tran
moriartymaps.com
As vaccination has become a political hot potato, the already patchwork of counties & schools meeting herd immunity standards has fallen further.

Maps + an interactive to lookup your local schools in this blockbuster w/ @laurenweberhp.bsky.social & @caitlingilbert.bsky.social

wapo.st/49zDc43
December 31, 2025 at 3:24 PM
Reposted by Andrew Ba Tran
caitlingilbert.bsky.social
EXCLUSIVE: @laurenweberhp.bsky.social & I have spent the last year collecting school+county-level vaccination data from across the US and found that only about 28% of counties now have herd immunity for kindergartners from measles—that leaves about 5.2mn kids unprotected.

Gift link: wapo.st/49zDc43
U.S. vaccination rates are plunging. Look up where your school stands.
Take a look to see what the kindergarten measles vaccination rates are in your area.
wapo.st
December 31, 2025 at 2:29 PM
Reposted by Andrew Ba Tran
imogenpiper.bsky.social
For our new visual investigation into how night vision and city lights may have played a part in the DCA crash we flew a drone along the helicopters route, filmed incoming planes through night vision goggles, and analyzed it all within a 3D model of Washington, D.C.
Watch here wapo.st/4atdTBI
In deadly D.C. plane crash, city lights may have played a role. See how.
The Post examined the bright skyline around Reagan National Airport and whether it may have been a factor in the January accident, which killed 67 people.
wapo.st
December 22, 2025 at 5:17 PM
Reposted by Andrew Ba Tran
boiler40.bsky.social
Excellent breakdown of potential contributing factors to the tragic air collision over the Potomac. Class B information overload + lights & NVGs potential contributors via @imogenpiper.bsky.social @jb1prod.bsky.social @abtran.bsky.social @alexhorton.bsky.social Brian Perlman wapo.st/4atdTBI
In deadly D.C. plane crash, city lights may have played a role. See how.
The Post examined the bright skyline around Reagan National Airport and whether it may have been a factor in the January accident, which killed 67 people.
wapo.st
December 21, 2025 at 5:09 PM
abtran.bsky.social
Love the methodology box behind this College Football Happiness Rankings story wapo.st/49iK71p
December 18, 2025 at 3:54 PM
Reposted by Andrew Ba Tran
twallack.bsky.social
This email. #FOIA. www.bostonglobe.com/2025/11/20/m...
November 20, 2025 at 12:33 PM
Reposted by Andrew Ba Tran
meghanhoyer.bsky.social
Wide roads and fast-moving vehicles — especially when combined with signs of poverty, homelessness, drug & alcohol abuse, plus a lack of pedestrian-focused roadway improvements — has produced a pattern of death-by-vehicle that is uniquely American.
Investigation by Ian Duncan & Emmanuel Martinez:
The deadliest roads in America
The number of pedestrians killed by vehicles has increased in the U.S., with road infrastructure and inadequate safety measures among key contributing factors.
www.washingtonpost.com
November 19, 2025 at 9:52 PM
Reposted by Andrew Ba Tran
willoremus.com
You can oversee the bloody dismemberment of a Washington Post journalist with a bone saw, and the president of the United States will smile, shake your hand and threaten to pull the license of a news outlet whose reporter asks you a question about it.
www.washingtonpost.com/world/2025/1...
Trump defends Saudi crown prince over Khashoggi killing
The de facto Saudi ruler was branded a pariah in 2018 after the killing of Washington Post columnist Jamal Khashoggi. Now, U.S.-Saudi relations are approaching a high point.
www.washingtonpost.com
November 18, 2025 at 7:11 PM
abtran.bsky.social
Tracking the spread of bird flu using genetic markers, satellite imagery, property records, and more reminds me of John Snow’s Cholera investigation/map. Howe’s Hens is the modern day Broad Street Pump. Amazing work from @natlash.bsky.social & @chrisalcantara.com. www.propublica.org/article/meth...
November 18, 2025 at 1:32 PM
Reposted by Andrew Ba Tran
sfcpoll.bsky.social
As costs rise again, most Americans fault Trump, Post-ABC-Ipsos poll finds. Story by @abha-b.bsky.social @abtran.bsky.social www.washingtonpost.com/business/202...
November 4, 2025 at 12:54 PM
Reposted by Andrew Ba Tran
ddiamond.bsky.social
Trump’s demolition of the East Wing + construction of his ballroom is broadly unpopular.

56% of Americans oppose the project, compared to 28% who support it, per new Post-ABC-Ipsos poll.

with @abtran.bsky.social @jonathanreports.bsky.social @sfcpoll.bsky.social
Most Americans oppose East Wing demolition for Trump ballroom, poll finds
Fifty-six percent say they oppose President Donald Trump’s decision to tear down part of the White House to build a 90,000-square-foot ballroom building.
www.washingtonpost.com
October 30, 2025 at 12:00 PM
Reposted by Andrew Ba Tran
sfcpoll.bsky.social
New Post-ABC-Ipsos poll: Americans oppose President Donald Trump’s demolition of the White House’s East Wing to make way for a 90,000-square-foot ballroom building by a 2-to-1 margin. By @ddiamond.bsky.social @abtran.bsky.social @jonathanreports.bsky.social www.washingtonpost.com/politics/202...
Most Americans oppose East Wing demolition for Trump ballroom, poll finds
Fifty-six percent say they oppose President Donald Trump’s decision to tear down part of the White House to build a 90,000-square-foot ballroom building.
www.washingtonpost.com
October 30, 2025 at 11:07 AM
abtran.bsky.social
The mysterious rise of cancer among young adults in the Corn Belt. This story has both bivariate maps AND a color-coded scatterplot with explainers! #dataviz
A bivariate map showing the relationship between cancer rates and mortality rates across the United States. A scatter plot showing the same relationship between cancer rates and death rates as the bivariate map but in a different format.
October 28, 2025 at 3:45 PM
Reposted by Andrew Ba Tran
emilygiam.bsky.social
How America’s favorite sports bet is fueling sportsbook profits

Parlays are becoming more popular, accounting for an increasing share of the money wagered on sports, according to a Post analysis of betting data. Bettors lose billions a year on these bets.

www.washingtonpost.com/sports/inter...
Americans can’t stop betting parlays. Sportbooks are cashing in.
As betting booms, parlays are accounting for an increasing share of the money wagered on sports, according to a Washington Post analysis of state data.
www.washingtonpost.com
October 9, 2025 at 2:51 PM
Reposted by Andrew Ba Tran
meghanhoyer.bsky.social
Parlays have become incredibly popular, with many betting apps encouraging these high-stakes multi-leg bets. But as legs are added, the chance of winning drops faster than the growth of the potential payout - which means sportsbooks have the advantage. Explore the math and and try your own bets:
Americans can’t stop betting parlays. Sportbooks are cashing in.
As betting booms, parlays are accounting for an increasing share of the money wagered on sports, according to a Washington Post analysis of state data.
www.washingtonpost.com
October 9, 2025 at 4:50 PM
Reposted by Andrew Ba Tran
gbrockell.bsky.social
NEW: Air Force jets are doing ICE flights to Africa with transponders turned off, making them nearly un-trackable.

This includes the third-country removal to Ghana and another secret flight. We figured out where it landed.

From me for @rollingstone.com:

www.rollingstone.com/politics/pol...
ICE Is Deporting People to Africa on Nearly Un-Trackable Military Flights
Immigration and Customs Enforcement (ICE) is deporting people to African countries like Ghana on military flights that are nearly un-trackable.
www.rollingstone.com
September 21, 2025 at 1:10 PM
abtran.bsky.social
During Trump's federal law enforcement surge in DC, Park Police helicopters spent nearly 20 hours hovering over city neighborhoods, up from 3 hours this same time last year -- and flew hundreds of feet lower than other helicopters. With @imogenpiper.bsky.social www.washingtonpost.com/investigatio...
In Trump’s D.C. surge, helicopters hovered and surveilled day and night
Park Police helicopters circled more often than they did in the same time period last year and at lower altitudes than other law enforcement helicopters in D.C. this August.
www.washingtonpost.com
September 20, 2025 at 10:07 PM
abtran.bsky.social
Washington’s Metropolitan Police Department’s officer count alone already puts D.C. ahead of any other large city in the United States per capita. Including the additional federal officials means there’s currently one officer for every 100 residents in D.C. www.washingtonpost.com/dc-md-va/202...
August 15, 2025 at 4:48 PM
abtran.bsky.social
Adding another example to my college class folder of "wtf dataviz"
July 30, 2025 at 4:48 PM
abtran.bsky.social
When you get a government data set and can guess the person who used to regularly publish it took the RIF because it's a totally different messier format...
July 22, 2025 at 5:16 PM
abtran.bsky.social
Some day I will be able to recognize which digits are latitude and which ones are longitude but it won't be today or any time soon.
July 14, 2025 at 7:36 PM
Reposted by Andrew Ba Tran
hansilowang.bsky.social
NEW: The Census Bureau is planning to scale back its Survey of Income and Program Participation — which is used to measure use of SNAP food assistance and other government programs — and start using "non-survey data" to lower costs, according to a budget document
www.commerce.gov/sites/defaul...
Current Demographic Statistics: The Census Bureau is making a pivotal change by developing alternate ways to deliver estimates currently provided by the Survey of Income and Program Participation (SIPP). The data are used to estimate eligibility, use, future costs, and coverage for government programs, such as the Supplemental Nutrition Assistance Program, and to provide improved statistics on the distribution of income in the country. The Census Bureau is transitioning to a more effective approach that merges modern survey techniques with advanced data science methods. This innovative strategy will allow the Census Bureau to focus on a smaller, more targeted sample while utilizing non-survey data to lower costs, lessen the burden on respondents, and enhance both the timeliness and accuracy of statistical outputs. The Census Bureau plans to streamline the collection to deliver the critical, legally mandated socio-economic and demographic data traditionally provided in the SIPP. While SIPP has played an important role in shedding light on the economic well-being of Americans, its data collection has been expensive and challenging for respondents. This new approach plans to deliver crucial insights more efficiently and effectively, ultimately benefiting both the Census Bureau and the public. For more information, see CEN-19.
June 25, 2025 at 3:27 PM
abtran.bsky.social
The National Archives had a message yesterday that their College Park facility would become restricted-access. This would be a horrible. We visited often last year to research Indian Boarding schools and the cartographic staff were so helpful. I saw hundreds of citizens getting help looking up docs.
June 25, 2025 at 1:41 PM