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Viral pneumonia
1Department of Medicine, Baylor College of Medicine, Houston, Texas.
Abstract:
Viral pneumonias are common in infants and young children but rare in adults. Respiratory syncytial virus (RSV) and para-influenza viruses are the most frequent viral pathogens in infants and children. Influenza virus types A and B account for over one half of viral pneumonias in adults. Immunocompromised hosts are susceptible to pneumonias caused by cytomegalovirus (CMV) and other herpesviruses, as well as rubeola and adenovirus. Diagnosis of viral pneumonia depends on appropriate viral cultures and acute and convalescent sera for specific antibodies. Superinfection with bacteria is common in adults. Anti-viral therapy is available for several respiratory viruses. Ribavirin, amantadine/rimantadine, interferon alpha, and acyclovir are antiviral drugs that may be of benefit in treatment and prophylaxis. Prevention of viral pneumonia will depend upon improved viral immunization practices.
Insights
Viral pneumonias are common in children, caused by RSV and parainfluenza. Adults are more susceptible to influenza A and B, with bacterial superinfections possible. Antiviral therapies and improved immunizations are key for prevention and treatment.
Area of Science:
- Medicine
- Virology
- Pediatrics
Background:
- Viral pneumonias are frequent in pediatric populations but uncommon in adults.
- Respiratory syncytial virus (RSV) and parainfluenza viruses are leading causes in infants and children.
- Influenza A and B viruses are primary culprits in adult viral pneumonia cases.
Purpose of the Study:
- To review the epidemiology, diagnosis, and management of viral pneumonias across different age groups.
- To highlight specific viral pathogens associated with pneumonia in infants, children, adults, and immunocompromised individuals.
- To discuss current and potential therapeutic interventions and preventive strategies for viral pneumonia.
Main Methods:
- Literature review of viral pneumonia epidemiology and etiology.
- Summary of diagnostic approaches including viral cultures and serological testing.
- Overview of antiviral treatments and prophylaxis options.
Main Results:
- RSV and parainfluenza are common in children; influenza A and B in adults.
- Immunocompromised individuals are at risk for cytomegalovirus (CMV) and other herpesvirus pneumonias.
- Bacterial superinfection is a frequent complication in adult viral pneumonia.
Conclusions:
- Accurate diagnosis relies on viral cultures and antibody testing.
- Antiviral agents like ribavirin, amantadine/rimantadine, interferon alpha, and acyclovir show potential benefits.
- Enhanced viral immunization practices are crucial for preventing viral pneumonia.