CDC: About Human Parainfluenza Viruses (HPIVs)
WHAT TO KNOW Signs and symptoms HPIVs commonly cause upper and lower respiratory illnesses in infants, young children, older adults, and people with weakened immune systems, but anyone can get infected. Symptoms generally appear 2 to 6 days after infection. Signs and symptoms are similar to the common cold and can include: Other symptoms of HPIV illness […]