Signs of respiratory infection
Pro Research Analysisby 
Searched over 200M research papers
Signs of Respiratory Infection
Respiratory infections encompass a wide range of illnesses, from common colds to severe diseases like pneumonia and COVID-19. Understanding the signs and symptoms of these infections is crucial for timely diagnosis and treatment. This article synthesizes findings from multiple studies to highlight the key signs of respiratory infections.
Common Signs of Respiratory Syncytial Virus (RSV)
RSV in Children
Respiratory syncytial virus (RSV) is a significant cause of lower respiratory tract infections (LRTIs) in children. Common signs in children include nasal discharge or congestion, cough, shortness of breath, feeding abnormalities, and fever, reported in over 40% of cases. These symptoms can lead to hospital stays ranging from 2 to 7.5 days, depending on the region.
RSV in High-Risk Adults
In high-risk adults, such as the elderly or immunocompromised individuals, RSV symptoms often include cough, sputum production, dyspnea (difficulty breathing), and fever or feverishness. These symptoms are primarily related to LRTIs and can result in hospital stays of 6 to 15 days.
COVID-19 Symptoms
Acute COVID-19
The most frequent signs of COVID-19 include fever, cough, and dyspnea. Gastrointestinal symptoms and loss of taste or smell are also reported, particularly in mild cases. Severe cases often present with dyspnea, which can be a critical indicator of the disease's progression.
Long COVID
Long COVID, defined as symptoms persisting for at least four weeks post-infection, commonly includes fatigue, dyspnea, olfactory dysfunction, myalgia, cough, and gustatory dysfunction. These symptoms can significantly impact quality of life and may persist for months.
Lower Respiratory Infections (LRI) in Children
Simple Clinical Signs
In diagnosing pediatric LRI, increased respiratory rates (over 40/min in infants and over 30/min in older children) are reliable indicators. Other signs include chest indrawing and nasal flaring, which are associated with moderate to severe disease.
Hypoxaemia Indicators
Hypoxaemia, a common complication of acute LRI, can be predicted by signs such as very fast breathing (over 60 or 70 breaths per minute), cyanosis, grunting, nasal flaring, chest retractions, head nodding, and auscultatory signs. These signs are crucial for early detection and management, especially in resource-limited settings.
Pneumonia Symptoms
Pneumonia, an acute lung infection, presents with respiratory signs such as cough, shortness of breath, increased respiratory rate, sputum production, and chest pain. Systemic symptoms like fever, fatigue, muscle aches, and lack of appetite are also common.
Conclusion
Recognizing the signs of respiratory infections is essential for effective diagnosis and treatment. Common symptoms across various infections include cough, fever, and difficulty breathing, with specific signs like nasal discharge in RSV, loss of taste or smell in COVID-19, and chest retractions in pediatric LRI. Understanding these signs can aid in timely medical intervention and improve patient outcomes.
Sources and full results
Most relevant research papers on this topic