CDC Update: Overall Respiratory Illness Is Very Low, but PIV and Pertussis Are Up

Good news first: In a nationwide surveillance update published July 24, 2026, CDC reported that overall acute respiratory illness activity (the kind that leads people to seek care) is very low.

Still, CDC’s snapshot highlights two signals families should pay attention to: parainfluenza (PIV) is elevated, and whooping cough (pertussis) is still circulating. Different respiratory germs can rise and fall on different timelines—so it’s smart to use everyday prevention habits even when the overall picture looks reassuring.

What the CDC snapshot shows (and what it doesn’t)

Overall acute respiratory illness: very low nationally.
Parainfluenza (PIV): elevated activity can lead to respiratory symptoms (such as cough and congestion) and, in some children—especially younger ones—illness that may affect the lower airways.
Pertussis (whooping cough): ongoing circulation, with the current level lower than a prior peak CDC reported in late 2024.

Important context: This is national surveillance. Your local community’s situation can differ, and individual risk depends on age, vaccination status, and health conditions.

Why families and schools still need a “sick-day” plan

Even when overall activity is low, outbreaks can shift quickly. For PIV, there isn’t a routine vaccine the way there is for some other illnesses—so prevention relies mainly on staying home when sick, hygiene, and reducing close exposure. For pertussis, vaccination is a key layer of protection, especially for protecting infants who are not fully immunized.

Prevention that fits everyday life: “When you’re sick” rules

CDC’s guidance is designed for homes, schools, and workplaces:

Stay home and away from others when you have respiratory virus symptoms that aren’t clearly explained by another cause (for example, a new cough, fever, runny nose, or feeling very unwell).
Before returning to normal activities, make sure symptoms are improving and you’re no longer running a fever (without using fever-reducing medicine).
After returning, take extra precautions for the next 5 days to reduce exposure—such as paying extra attention to hygiene and ventilation, and taking steps to limit close contact with people at higher risk.
If symptoms worsen or a fever returns, stay home again.

Pertussis protection: vaccine basics (and what to do if you’re unsure)

CDC vaccination recommendations help protect children, teens, and adults—and are especially important in preventing exposure to newborns and young infants.

Babies/young children: DTaP doses are given in infancy and early childhood (multiple doses, then booster doses).
Preteens/teens: Tdap is recommended at ages 11–12.
Adults: CDC recommends Tdap if you haven’t received it previously, and then Td or Tdap boosters at intervals (commonly every 10 years).
Pregnancy: CDC recommends Tdap during every pregnancy, in the early part of the 3rd trimester, to help protect the baby in the first months of life.

If you’re not sure whether a child (or another close contact) is up to date, consider checking vaccination records and speaking with a healthcare or vaccine provider about next steps. If an infant is exposed to someone with whooping cough or has concerning symptoms, contact the child’s pediatric clinician promptly.

When to get urgent help

Respiratory illnesses can start similarly, so the safest approach is to watch for warning signs—especially in infants and young children.

For infants and young children (RSV-type warning signs): seek emergency care if a child has trouble breathing (for example, breathing that looks hard or fast, pauses in breathing, or retractions), is not drinking enough or shows dehydration, looks very sleepy or worsening, or shows bluish/gray coloring.
For possible whooping cough: if an infant or child seems to be struggling to breathe, needs urgent evaluation—especially if there are color changes or breathing pauses.

If you’re unsure whether symptoms are “urgent,” calling your pediatrician or local nurse line can help you decide the next step.

What you can do today (3–5 practical steps)

Check vaccine status for DTaP/Tdap where applicable, and plan a catch-up discussion if anything is out of date.
Set a household/school sick-day plan: decide who stays home, how you’ll manage childcare/work coverage, and what “returning” will look like.
Know your “watch closely” signs, especially for infants (breathing difficulty and poor fluid intake).
After someone improves, use the 5-day extra precautions to reduce exposure to people at higher risk.
Plan who to call (school nurse, pediatrician, urgent care) based on your child’s age and typical access to care.

Resources

CDC Respiratory Illnesses Data Channel (July 24, 2026 snapshot)
CDC: Other Respiratory Illnesses Going Around (PIV & pertussis notes)
CDC: Preventing Spread of Respiratory Viruses When You’re Sick
CDC: Whooping Cough (Pertussis) Vaccine Recommendations
CDC: RSV in Infants and Young Children (when to seek emergency care)
HealthyChildren.org (AAP): Whooping Cough (Pertussis) Symptoms, Treatment & Prevention

Sources

Editorial note: Weence articles are researched from cited public-health, medical, regulatory, journal, and reputable news sources and may be drafted with AI assistance. They are checked for source support, clarity, and safety guardrails before publication.

This article is for general informational purposes only and is not medical advice. Research findings can be early or incomplete, and health guidance can change. Always talk with a qualified healthcare professional about personal symptoms, diagnosis, medications, vaccines, screenings, or treatment decisions. If you think you may have a medical emergency, call emergency services right away.