Pneumonia

Pneumonia is a leading cause of death and hospitalization, costing health care systems billions of dollars and an estimated 600,000 adult deaths worldwide each year. Pneumococcal disease is caused by the bacterium Streptococcus pneumoniae and the term describes a group of illnesses, including invasive infections, such as bacteremia/sepsis and meningitis, as well as pneumonia and upper respiratory tract infections. Although all age groups may be affected, the highest rate of pneumococcal disease occurs in young children and older adults. In addition, persons suffering from a wide range of chronic conditions (eg, diabetes, cardiovascular disease) and immune deficiencies are at increased risk.

Viral vs Bacterial Pneumonia

Pneumonia is an infection of one or both lungs which affects alveoli. This article looks at the differences between bacterial and viral pneumonia.

Walking Pneumonia Versus Bronchitis

Is Walking Pneumonia Contagious?

Pneumonia Diagnosis

Walking Pneumonia

Pneumonia History

Pneumonia Classification

Walking Pneumonia Versus Common Cold

Pneumonia Symptoms & Risk Factors

Walking Pneumonia: When to See a Doctor?

Types of Atypical Pneumonia

Who Gets Walking Pneumonia?

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Pneumonia Treatment

Walking Pneumonia versus Pneumonia

Pneumonia Epidemiology

Is Sense of Smell Linked to Pneumonia?

Risk Factors and Walking Pneumonia Prevention

How is Walking Pneumonia Treated?

Pneumonia in Children

Pneumonia Cause

Latest Pneumonia News and Research

New molecular test revolutionizes fungal infection diagnosis

Certain serious fungal infections occur in regions of the United States with specific environments and are often tied to soil exposure.

14 Nov 2025

Conflicting advice on covid shots likely to ding already low vaccine rates, experts warn

More than three-quarters of American adults didn't get a covid shot last season, a figure that health care experts warn could rise this year amid new U.S. government recommendations.

14 Nov 2025

Earlier blood transfusion reduces heart complications post-surgery in high-risk patients

An earlier blood transfusion- done when hemoglobin levels were higher - after major general or vascular surgery among people with heart disease was associated with a lower risk of some complications but not the most severe ones, according to a preliminary late-breaking science presentation today at the American Heart Association's Scientific Sessions 2025.

11 Nov 2025

Evolving epidemiology of invasive Group A Streptococcus in critical care

Streptococcus pyogenes or invasive Group A Streptococcus (iGAS) is a major clinical concern around the world, since iGAS infections can quickly escalate into life-threatening conditions such as necrotizing fasciitis, septic shock, and pneumonia.

6 Nov 2025

COVID-19 vaccination may have broader health benefits for children with atopic dermatitis

Children with atopic dermatitis (AD), commonly known as eczema, may experience fewer infections and allergic complications if they receive the COVID-19 vaccine, according to new research being presented at the 2025 American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting in Orlando.

6 Nov 2025

Louisiana took months to sound alarm after two babies died in whooping cough outbreak

When there's an outbreak of a vaccine-preventable disease, state health officials typically take certain steps to alert residents and issue public updates about the growing threat.

4 Nov 2025

Latest findings can lead to the development of a vaccine to protect against common ear infection

Owwww, howls your child while holding its ear and crying. Recent findings can lead to the development of a vaccine to protect against a very common type of ear infection.

3 Nov 2025

Understanding how biological sex and gender inequities contribute to suboptimal sepsis treatment

Sepsis continues to be a leading cause of mortality in ICUs worldwide. Despite advances in early detection and treatment, standardized antibiotic dosing frequently ignores patient-level variability-especially that associated with sex-related physiology and gender-influenced care disparities.

31 Oct 2025

Global study suggests potential for universal vaccine against Haemophilus influenzae

A vaccine that tackles the bacteria that cause up to 200 million childhood infections every year could be possible, experts say.

31 Oct 2025

Understanding the role of m6A methylation in acute lung injury pathogenesis

Acute lung injury (ALI) is a critical clinical condition characterized by diffuse inflammation of the lung parenchyma and intractable hypoxemia, typically caused by factors, such as trauma, pneumonia, shock, and sepsis.

30 Oct 2025

Doctors muffled as Florida moves to end decades of childhood vaccination mandates

Florida plans to end nearly a half-century of required childhood immunizations against diseases that have killed and maimed millions of children. Many critics of the decision, including doctors, are afraid to speak up against it.

27 Oct 2025

New database transforms evidence-based care for children with lower respiratory tract infections

Lower respiratory tract infections (LRTIs) remain the most common illnesses in children, accounting for up to two-thirds of pediatric outpatient and inpatient cases in China.

24 Oct 2025

A parent's guide to manage pediatric respiratory illnesses during the virus season

As we head deeper into fall and toward the holiday season, your little one may start to exhibit symptoms like a runny nose, cough, or fever.

24 Oct 2025

Targeting bacterial communication may offer antibiotic-free wound therapy

Researchers at University of California San Diego School of Medicine have discovered a previously unrecognized mechanism by which Staphylococcus aureus - one of the most common causes of skin and soft tissue infections worldwide - delays wound healing.

15 Oct 2025

Children living near the Salton Sea face declining lung function

Children living near the Salton Sea, in Southern California's desert region of Imperial County, are experiencing poorer lung function than children exposed to less wind-blown dust, according to a new study led by researchers at the University of California, Irvine's Joe C. Wen School of Population & Public Health.

14 Oct 2025

$Anesthesiologist-led care speeds surgery and reduces complications for hip fracture patients$

Anesthesiologist-led care speeds surgery and reduces complications for hip fracture patients

When anesthesiologists lead the preoperative process, patients undergoing surgery for hip fractures - one of the leading causes of hospitalization in older adults - get to the operating room (OR) faster and have fewer complications, according to a study presented at the ANESTHESIOLOGY® 2025 annual meeting.

13 Oct 2025

Study finds prolonged fasting common among infants before anesthesia

Most children - including nearly 80% of infants - go without clear liquids before surgery for at least twice as long as guidelines recommend, according to an analysis of data on more than 70,000 children presented at the ANESTHESIOLOGY 2025 annual meeting.

13 Oct 2025