Type b flu symptoms

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Symptoms of Type B Influenza

Common Symptoms of Type B Influenza

Type B influenza, like its counterpart Type A, is a contagious respiratory illness caused by the influenza virus. The symptoms of Type B influenza are generally similar to those of Type A, including fever, body aches, chills, fatigue, and headache. These symptoms typically begin 1 to 4 days after infection and can last for several days .

Respiratory Symptoms

Patients with Type B influenza often experience a range of respiratory symptoms. Runny nose, sore throat, and rhinorrhea are particularly common, occurring in 74%, 38%, and 49% of cases, respectively . These symptoms are less frequent in COVID-19 cases, highlighting a key difference between the two illnesses .

Systemic Symptoms

In addition to respiratory symptoms, Type B influenza can cause systemic symptoms such as fever, body aches, and fatigue. These symptoms are similar to those caused by Type A influenza and can be severe enough to require medical attention .

Age-Related Differences

The clinical presentation of Type B influenza can vary by age. Children aged 5-14 years are more likely to be infected with Type B viruses compared to other age groups . However, the overall clinical illness produced by Type B influenza is generally indistinguishable from that caused by Type A when consulting a general practitioner for acute respiratory infections .

Hospitalization and Severity

While Type B influenza can lead to hospitalization, it is generally less severe than Type A. The case fatality rate for hospitalized patients with Type B influenza is around 3%, which is lower than that for Type A and COVID-19 . The duration of hospitalization for Type B influenza is also shorter, averaging around 6.7 days .

Conclusion

Type B influenza shares many symptoms with Type A, including fever, body aches, and respiratory issues like runny nose and sore throat. However, it tends to be less severe and has a lower hospitalization rate. Understanding these symptoms can help in timely diagnosis and treatment, especially during flu season.

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Most relevant research papers on this topic

Comparison of influenza type A and B with COVID‐19: A global systematic review and meta‐analysis on clinical, laboratory and radiographic findings

COVID-19 and influenza have many differences in clinical manifestations and radiographic findings, making timely detection and distinction crucial for effective treatment.

Meta-AnalysisRigorous JournalHighly Cited

2020·

104citations

·A. Pormohammadet al.

Reviews in Medical Virology

Clinical Characteristics Are Similar across Type A and B Influenza Virus Infections

Despite differences in age distribution, the clinical illness produced by different influenza virus types and subtypes is indistinguishable among patients consulted by general practitioners for acute respiratory infections.

Observational StudyRigorous JournalHighly Cited

2015·

98citations

·A. Mosnieret al.

PLoS ONE

Xofluza (Baloxavir Marboxil) for the Treatment Of Acute Uncomplicated Influenza.

Xofluza effectively treats acute uncomplicated influenza in adults aged 6 months and older, providing a new treatment option for those with resistance to adamantine-class antivirals.

2019·

37citations

·K. Ng

P & T : a peer-reviewed journal for formulary management

Flu-like symptoms following botulinum toxin therapy.

Flu-like symptoms (FLS) are common in patients treated with botulinum toxin type A and B, with no clear risk factors identified.

Systematic Review

2011·

41citations

·J. Baizabal-Carvalloet al.

Toxicon : official journal of the International Society on Toxinology

Preceding respiratory infection predisposing for primary and secondary invasive Haemophilus influenzae type b disease.

A respiratory infection predisposing for invasive H. influenzae type b disease may circulate among patients and their close contacts, with adenovirus, influenza A, respiratory syncytial virus, or para-influenza type 1, 2, and 3 being important.

Observational Study

1993·

29citations

·A. Takalaet al.

The Pediatric infectious disease journal

Infectious croup; Hemophilus influenzae type B croup.

H. influenzae type B croup is a severe, rapidly onset infectious croup caused by a distinct bacteria, with rapid onset and severe symptoms.

Observational Study

1948·

32citations

·E. Rabe

Pediatrics

GASTRIC 'FLU INFLUENZA B CAUSING ABDOMINAL SYMPTOMS IN CHILDREN

Influenza-B virus causes abdominal pain in children, often severe enough to require differentiation from acute appendicitis, with rapid diagnosis and management being crucial.

1975·

51citations

·A. Kerret al.

The Lancet

A case of fulminant type 1 diabetes mellitus after influenza B infection.

Fulminant type 1 diabetes can develop after influenza B infection, suggesting host factors play a more significant role than the virus itself in the etiology of fulminant type 1 diabetes.

Case Report

2008·

54citations

·Hiroyuki Sanoet al.

Diabetes research and clinical practice

Clinical features and outcomes of influenza by virus type/subtype/lineage in pediatric patients

FluB infection is more severe than FluA infection in children aged 2 years, but overall clinical features are similar in pediatric patients infected with four recently circulating influenza viruses.

Observational Study

2021·

8citations

·S. Hanet al.

Translational Pediatrics

Characteristics of hospitalized adult patients with laboratory documented Influenza A, B and Respiratory Syncytial Virus – A single center retrospective observational study

FluA and FluB both contribute equally to hospitalizations, but RSV has a greater impact on older, sicker patients and worse outcomes, while vaccination appears to protect against FluB hospitalizations.

Observational StudyRigorous Journal

2019·

31citations

·R. Cohenet al.

PLoS ONE

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