Tag: post-infectious onset

Increased risk of chronic fatigue syndrome following infection: a 17-year population-based cohort study

Abstract:

Background: Previous serological studies have indicated an association between viruses and atypical pathogens and Chronic Fatigue Syndrome (CFS). This study aims to investigate the correlation between infections from common pathogens, including typical bacteria, and the subsequent risk of developing CFS. The analysis is based on data from Taiwan’s National Health Insurance Research Database.

Methods: From 2000 to 2017, we included a total of 395,811 cases aged 20 years or older newly diagnosed with infection. The cases were matched 1:1 with controls using a propensity score and were followed up until diagnoses of CFS were made.

Results: The Cox proportional hazards regression analysis was used to estimate the relationship between infection and the subsequent risk of CFS. The incidence density rates among non-infection and infection population were 3.67 and 5.40 per 1000 person-years, respectively (adjusted hazard ratio [HR] = 1.5, with a 95% confidence interval [CI] 1.47-1.54). Patients infected with Varicella-zoster virus, Mycobacterium tuberculosis, Escherichia coli, Candida, Salmonella, Staphylococcus aureus and influenza virus had a significantly higher risk of CFS than those without these pathogens (p < 0.05). Patients taking doxycycline, azithromycin, moxifloxacin, levofloxacin, or ciprofloxacin had a significantly lower risk of CFS than patients in the corresponding control group (p < 0.05).

Conclusion: Our population-based retrospective cohort study found that infection with common pathogens, including bacteria, viruses, is associated with an increased risk of developing CFS.

Source: Chang H, Kuo CF, Yu TS, Ke LY, Hung CL, Tsai SY. Increased risk of chronic fatigue syndrome following infection: a 17-year population-based cohort study. J Transl Med. 2023 Nov 11;21(1):804. doi: 10.1186/s12967-023-04636-z. PMID: 37951920. https://translational-medicine.biomedcentral.com/articles/10.1186/s12967-023-04636-z (Full text)

Typing myalgic encephalomyelitis by infection at onset: A DecodeME study

Abstract:

Background: People with myalgic encephalomyelitis / chronic fatigue syndrome (ME/CFS) daily experience core symptoms of post-exertional malaise, unrefreshing sleep, and cognitive impairment or brain fog. Despite numbering 0.2-0.4% of the population, no laboratory test is available for their diagnosis, no effective therapy exists for their treatment, and no scientific breakthrough regarding their pathogenesis has been made. It remains unknown, despite decades of small-scale studies, whether individuals experience different types of ME/CFS separated by onset-type, sex or age.

Methods: DecodeME is a large population-based study of ME/CFS that recruited 17,074 participants in the first 3 months following full launch. Their detailed questionnaire responses provided an unparalleled opportunity to investigate illness severity, onset, course and duration.

Results: The well-established sex-bias among ME/CFS patients is evident in the initial DecodeME cohort: 83.5% of participants were females. What was not known previously was that females’ comorbidities and symptoms tend to be more numerous than males’. Moreover, being female, being older and being over 10 years from ME/CFS onset are significantly associated with greater severity.  Five different ME/CFS onset types were examined in the self-reported data: those with ME/CFS onset (i) after glandular fever (infectious mononucleosis); (ii) after COVID-19 infection; (iii) after other infections; (iv) without an identified infectious onset; and, (v) where the occurrence of an infection at or preceding onset is not known.

Conclusions: This revealed that people with a ME/CFS diagnosis are not a homogeneous group, as clear differences exist in symptomatology and comorbidity.

Source: Bretherick AD, McGrath SJ, Devereux-Cooke A et al. Typing myalgic encephalomyelitis by infection at onset: A DecodeME study [version 1; peer review: awaiting peer review]. NIHR Open Res 2023, 3:20 https://doi.org/10.3310/nihropenres.13421.1 (Full text)

Orthostatic Intolerance in Long-Haul COVID after SARS-CoV-2: A Case-Control Comparison with Post-EBV and Insidious-Onset Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Patients

Abstract:

Background: As complaints of long-haul COVID patients are similar to those of ME/CFS patients and as orthostatic intolerance (OI) plays an important role in the COVID infection symptomatology, we compared 14 long-haul COVID patients with 14 ME/CFS patients with a post-viral Ebstein-Barr (EBV) onset and 14 ME/CFS patients with an insidious onset of the disease.
Methods: In all patients, OI analysis by history taking and OI assessed during a tilt test, as well as cerebral blood flow measurements by extracranial Doppler, and cardiac index measurements by suprasternal Doppler during the tilt test were obtained in all patients.
Results: Except for disease duration no differences were found in clinical characteristics. The prevalence of POTS was higher in the long-haul patients (100%) than in post-EBV (43%) and in insidious-onset (50%) patients (p = 0.0002). No differences between the three groups were present in the prevalence of OI, heart rate and blood pressure changes, changes in cerebral blood flow or in cardiac index during the tilt test.
Conclusion: OI symptomatology and objective abnormalities of OI (abnormal cerebral blood flow and cardiac index reduction during tilt testing) are comparable to those in ME/CFS patients. It indicates that long-haul COVID is essentially the same disease as ME/CFS.
Source: van Campen CMC, Visser FC. Orthostatic Intolerance in Long-Haul COVID after SARS-CoV-2: A Case-Control Comparison with Post-EBV and Insidious-Onset Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Patients. Healthcare. 2022; 10(10):2058. https://doi.org/10.3390/healthcare10102058 (Full text)

Chronic fatigue syndrome following infections in adolescents

Abstract:

PURPOSE OF REVIEW: To review the recent epidemiology, pathophysiology, and treatment of postinfectious chronic fatigue syndrome (CFS) in adolescents.

RECENT FINDINGS: Thirteen percent of adolescents (mainly women) met the criteria for CFS 6 months following infectious mononucleosis; the figure was 7% at 12 months and 4% at 24 months. Peak work capacity, activity level, orthostatic intolerance, salivary cortisol, and natural killer cell number and function were similar between adolescents with CFS following infectious mononucleosis and recovered controls. Autonomic system, oxygen consumption, peak oxygen pulse, psychological and cytokine network differences were documented between those who recovered and those who did not.

SUMMARY: The prognosis of CFS is better in adolescents than in adults. Activity level, exercise tolerance, and orthostatic testing could not distinguish patients with CFS from adolescents who have recovered from infectious mononucleosis (controls), while certain cytokine network analyses, life stress factors, and autonomic symptoms could.

 

Source: Katz BZ, Jason LA. Chronic fatigue syndrome following infections in adolescents. Curr Opin Pediatr. 2013 Feb;25(1):95-102. doi: 10.1097/MOP.0b013e32835c1108. https://www.ncbi.nlm.nih.gov/pubmed/23263024

 

Chronic fatigue syndrome after Giardia enteritis: clinical characteristics, disability and long-term sickness absence

Abstract:

BACKGROUND: A waterborne outbreak of Giardia lamblia gastroenteritis led to a high prevalence of long-lasting fatigue and abdominal symptoms. The aim was to describe the clinical characteristics, disability and employmentloss in a case series of patients with Chronic Fatigue Syndrome (CFS) after the infection.

METHODS: Patients who reported persistent fatigue, lowered functional capacity and sickness leave or delayed education after a large community outbreak of giardiasis enteritis in the city of Bergen, Norway were evaluated with the established Centers for Disease Control and Prevention criteria for CFS. Fatigue was self-rated by the Fatigue Severity Scale (FSS). Physical and mental health status and functional impairment was measured by the Medical Outcome Severity Scale-short Form-36 (SF-36). The Hospital Anxiety and Depression Scale (HADS) was used to measure co-morbid anxiety and depression. Inability to work or study because of fatigue was determined by sickness absence certified by a doctor.

RESULTS: A total of 58 (60%) out of 96 patients with long-lasting post-infectious fatigue after laboratory confirmed giardiasis were diagnosed with CFS. In all, 1262 patients had laboratory confirmed giardiasis. At the time of referral (mean illness duration 2.7 years) 16% reported improvement, 28% reported no change, and 57% reported progressive course with gradual worsening. Mean FSS score was 6.6. A distinctive pattern of impairment was documented with the SF-36. The physical functioning, vitality (energy/fatigue) and social functioning were especially reduced. Long-term sickness absence from studies and work was noted in all patients.

CONCLUSION: After giardiasis enteritis at least 5% developed clinical characteristics and functional impairment comparable to previously described post-infectious fatigue syndrome.

 

Source: Naess H, Nyland M, Hausken T, Follestad I, Nyland HI. Chronic fatigue syndrome after Giardia enteritis: clinical characteristics, disability and long-term sickness absence. BMC Gastroenterol. 2012 Feb 8;12:13. doi: 10.1186/1471-230X-12-13. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3292445/ (Full article)

 

Study of immune alterations in patients with chronic fatigue syndrome with different etiologies

Abstract:

The Chronic Fatigue Syndrome (CFS) is characterized by symptoms lasting for at least six months and accompanied by disabling fatigue. The etiology of CFS is still unclear.

At the National Center for Study of the Infectious Diseases Department of the Chieti University some immune investigations were performed with the purpose of detecting markers of the disease. CD4+, CD8+, NK CD56+ and B CD19+ lymphocytes were studied in 92 male and 47 female patients and in 36 control subjects. CFS patients were divided in three groups with a post-infectious onset (PI-CFS), an non post-infectious onset (NPI-CFS) and a non post-infectious onset with associated infections (NPI-CFS + AI).

Both CD4+ and CD8+ lymphocytes were reduced in the CFS patients. However, the CD4+/CD8+ ratio was increased in the CFS patients without difference between males and females. CD56+ cells of CFS patients were also reduced. In particular, blood CD56+ cells counts were significantly higher in PI-CFS patients than in the NPI-CFS subjects. These data confirm our preliminary results suggesting a key-role of a dysfunction of the immune system as a precipitating and-or perpetuating factor of the syndrome.

 

Source: Racciatti D, Dalessandro M, Delle Donne L, Falasca K, Zingariello P, Paganelli R, Pizzigallo E, Vecchiet J. Study of immune alterations in patients with chronic fatigue syndrome with different etiologies. Int J Immunopathol Pharmacol. 2004 May-Aug;17(2 Suppl):57-62. http://www.ncbi.nlm.nih.gov/pubmed/15345193

 

The prognosis after multidisciplinary treatment for patients with postinfectious chronic fatigue syndrome and noninfectious chronic fatigue syndrome

Abstract:

The prognosis after multidisciplinary treatment for patients with postinfectious chronic fatigue syndrome (CFS, n = 9) and noninfectious CFS (n = 9) was clarified. After treatment, natural killer (NK) cell activity increased in the postinfectious CFS group but did not recover to within normal range in the noninfectious CFS group. In the postinfectious CFS group, physical and mental symptoms improved, and 8 patients returned to work. In the noninfectious CFS group, symptoms did not improve, and only 3 patients returned to work. The prognosis of postinfectious CFS group was better than that of noninfectious CFS group. Classification of CFS patients into postinfectious and noninfectious groups is useful for choosing the appropriate treatment in order to obtain better prognosis.

 

Source: Masuda A, Nakayama T, Yamanaka T, Koga Y, Tei C. The prognosis after multidisciplinary treatment for patients with postinfectious chronic fatigue syndrome and noninfectious chronic fatigue syndrome. J Behav Med. 2002 Oct;25(5):487-97. http://www.ncbi.nlm.nih.gov/pubmed/12442563

 

A cluster of cases of chronic fatigue and chronic fatigue syndrome: clinical and immunologic studies

Chronic fatigue syndrome (CFS) is characterized by unexplained, persistent fatigue and other symptoms including arthralgias, myalgias, cognitive impairment, and depression [1, 2]. It has been postulated that infectious agents play a role in both sporadic cases and clustered cases of CFS [3- 5].

We were notified of a cluster of CFS cases that occurred in a women’s residential facility; these cases were associated with an influenza-like outbreak in February 1990. We conducted a study of these events in 1993. Between 1990 and 1993,36 women had lived in the facility. Sixteen of these residents reported fatigue that lasted more than or equal to1 month during the 3-year study interval. Two of the residents who entered the facility before 1990 already had fatigue. Five residents stated that the onset of fatigue corresponded to the outbreak of the influenza-like illness. Nine women described no temporal relationship between their fatigue and the “flu” outbreak. The fatigue resolved in two of these nine women after several weeks, while it persisted in the other seven. Evaluations were performed for these seven residents, and diagnoses including lupus, ulcerative colitis, or hyperparathyroidism were considered for three, but no cause for the fatigue was established for the other four.

You can read the rest of this article here: http://cid.oxfordjournals.org/content/23/2/408.long

 

Source: Levine PH, Dale JK, Benson-Grigg E, Fritz S, Grufferman S, Straus SE. A cluster of cases of chronic fatigue and chronic fatigue syndrome: clinical and immunologic studies. Clin Infect Dis. 1996 Aug;23(2):408-9. http://www.ncbi.nlm.nih.gov/pubmed/8842294

 

Postinfectious chronic fatigue: a distinct syndrome?

Abstract:

Chronic fatigue syndrome (CFS) is often preceded by a viral illness and has recurrent “flu-like” symptoms. We compared demographic, clinical, and laboratory features (markers of inflammation and viral infection) among 717 patients with chronic fatigue (CF) with and without a self-reported postinfectious onset to identify associated clinical and biologic findings and to examine the subset of patients with CFS. Only subjective fever, chills, sore throat, lymphadenopathy, poorer functional status, and attribution of illness to a physical condition were significantly associated with a postinfectious onset. The features of patients with CFS were virtually identical to those of the broader category of patients with CF. We conclude that a postinfectious onset was not associated with a pattern of abnormalities across multiple psychosocial and biologic parameters.

 

Source: Buchwald D, Umali J, Pearlman T, Kith P, Ashley R, Wener M. Postinfectious chronic fatigue: a distinct syndrome? Clin Infect Dis. 1996 Aug;23(2):385-7. http://cid.oxfordjournals.org/content/23/2/385.long (Full article)

 

Clinical presentation of chronic fatigue syndrome

Abstract:

Chronic fatigue syndrome (CFS) is a chronic illness of uncertain aetiology characterized by at least six months of debilitating fatigue and associated symptoms. The symptoms of the syndrome are all non-specific and some (but not all) are also seen in psychiatric illness. The symptomatology suggesting an organic component to the illness includes its abrupt onset with an ‘infectious-like’ illness, intermittent unexplained fevers, arthralgias and ‘gelling’ (stiffness), sore throats, cough, photophobia, night sweats, and post-exertional malaise with systemic symptoms. The illness can last for years and is associated with marked impairment of functional health status.

 

Source: Komaroff AL. Clinical presentation of chronic fatigue syndrome. Ciba Found Symp. 1993;173:43-54; discussion 54-61. http://www.ncbi.nlm.nih.gov/pubmed/8491106