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U.S. sees a record number of whooping cough. What is causing the spike?

There’s a new alert about the highly contagious whooping cough. The U.S. is seeing record numbers of cases. Stephanie Stahl reports on what's causing this spike.

Dec 4, 2024 (02:17)

New Pennsylvania law classifies 911 dispatchers as first responders

New Pennsylvania law classifies 911 dispatchers as first responders

One last hurrah: final Sunday for Open Streets: West Walnut this season

One last hurrah: final Sunday for Open Streets: West Walnut this season

French leaders hope for a peaceful day in Paris after protests lead to riots

French leaders hope for a peaceful day in Paris after protests lead to riots

Fall foliage reaching its peak across Philadelphia area, more frosty mornings ahead | NEXT Weather

Fall foliage reaching its peak across Philadelphia area, more frosty mornings ahead | NEXT Weather

Freeze warning in effect for parts of Philadelphia region as Sunday starts frosty

Freeze warning in effect for parts of Philadelphia region as Sunday starts frosty

South Philadelphia man returns home after Navy deployment

South Philadelphia man returns home after Navy deployment

2 cats recovering after shootings in South Jersey

2 cats recovering after shootings in South Jersey

Runners and walkers support Ronald McDonald House with 5K in South Jersey

Runners and walkers support Ronald McDonald House with 5K in South Jersey

Man dies after being shot by Philadelphia police during armed confrontation

Man dies after being shot by Philadelphia police during armed confrontation

Cold and clear Saturday night in Philadelphia region

Cold and clear Saturday night in Philadelphia region

Philadelphia police officer Hector Rodriguez released from hospital two weeks after double shooting

Philadelphia police officer Hector Rodriguez released from hospital two weeks after double shooting

Obama slams Trump on campaign trail in Ohio

Obama slams Trump on campaign trail in Ohio

Early voting begins in New Jersey for 2026 midterm elections

Early voting begins in New Jersey for 2026 midterm elections

Philadelphia police officer Hector Rodriguez, shot 12 times in line of duty, released from hospital

Philadelphia police officer Hector Rodriguez, shot 12 times in line of duty, released from hospital

Nickelodeon brings its Nicktober Hallo-Scream event to Philadelphia Zoo

Nickelodeon brings its Nicktober Hallo-Scream event to Philadelphia Zoo

Frosty mornings and sunny days ahead in the Philadelphia area | NEXT Weather

Frosty mornings and sunny days ahead in the Philadelphia area | NEXT Weather

Chilly start to the weekend in Philadelphia region

Chilly start to the weekend in Philadelphia region

La Salle beats Cardinal O'Hara, more highlights from Friday Football Frenzy

La Salle beats Cardinal O'Hara, more highlights from Friday Football Frenzy

Feud between DA Larry Krasner and Philadelphia police commissioner heats up

Feud between DA Larry Krasner and Philadelphia police commissioner heats up

Armed man shot by police in West Philadelphia

Armed man shot by police in West Philadelphia

Pennsylvania to require disclosures on AI-generated ads

Pennsylvania to require disclosures on AI-generated ads

What can be done to combat all-time-high diesel prices?

What can be done to combat all-time-high diesel prices?

Apple's first-ever foldable iPhone hits stores

Apple's first-ever foldable iPhone hits stores

The Portal is set to leave Philadelphia next week

The Portal is set to leave Philadelphia next week

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