1.Post COVID-19 syndrome and new onset diseases: a prospective observational study.
Nitin SINHA ; Mahinder Pal Singh CHAWLA ; Desh DEEPAK ; Amit SURI ; Piyush JAIN ; Ankit AGARWAL ; Manoj Kumar BHAKHAR
Singapore medical journal 2025;66(7):354-361
INTRODUCTION:
The National Institute of Health and Care Excellence (NICE) has defined the terms, 'acute coronavirus disease 2019' (COVID-19), 'ongoing symptomatic COVID-19' and 'post-COVID-19 syndrome', with the latter two described as having persistent symptoms after the onset of COVID-19 symptoms for 4-12 weeks and >12 weeks, respectively. Persistent symptoms can either be due to the after-effects of COVID-19 or new-onset diseases after acute COVID-19. All symptoms observed beyond 4 weeks after the onset of COVID-19 need not be present at the time of onset. Previous studies on persistent post-COVID-19 symptoms have not mentioned new-onset diseases after acute COVID-19, and only a select few studies have discussed such new-onset symptoms.
METHODS:
Ninety-five patients who attended the post-COVID-19 clinic completed the requisite follow-up till 16 weeks after COVID-19 symptom onset. Data was recorded on a predesigned proforma. Necessary investigations were conducted to rule out any other cause of persistent symptoms.
RESULTS:
Fatigue (62.1%), breathlessness (50.5%) and cough (27.4%) were the most common symptoms present beyond 4 weeks after the onset of COVID-19 symptoms. Forty-nine (51.57%) patients developed post-COVID-19 syndrome - their severity of symptoms (odds ratio [OR] 17.77) and longer duration of hospital stay (OR 1.095) during acute disease were significantly associated with the development of post-COVID-19 syndrome. During follow-up, 25 patients developed new-onset symptoms, such as diabetes mellitus, hypertension and idiopathic tachycardia.
CONCLUSION
Patients can have persistent symptoms, new-onset symptoms and new-onset diseases after recovery from acute COVID-19.
Humans
;
COVID-19/diagnosis*
;
Female
;
Male
;
Prospective Studies
;
Middle Aged
;
Adult
;
Fatigue/etiology*
;
Post-Acute COVID-19 Syndrome
;
SARS-CoV-2
;
Aged
;
Cough/etiology*
;
Dyspnea/etiology*
2.Japanese nationwide survey to track the impact of long COVID over 3 years.
Takuya OZAWA ; Hideki TERAI ; Hiromu TANAKA ; Arisa IBA ; Mariko HOSOZAWA ; Miyuki HORI ; Yoko MUTO ; Eiko YOSHIDA-KOHNO ; Ho NAMKOONG ; Shotaro CHUBACHI ; Ryo TAKEMURA ; Kengo NAGASHIMA ; Yasunori SATO ; Makoto ISHII ; Hiroyasu ISO ; Koichi FUKUNAGA
Environmental Health and Preventive Medicine 2025;30():84-84
BACKGROUND:
The long-term impact of symptom classification on quality of life (QOL) and economic outcomes among individuals with long coronavirus disease (COVID) remains poorly understood. This study aimed to clarify the situation of long COVID in Japan by analyzing patients using cluster classification.
METHODS:
This multicenter, retrospective cohort study enrolled 515 patients with COVID-19 and followed up for 36 months via standardized questionnaires. Patients were classified based on: 1) symptom trajectory over time and 2) symptom cluster profiles at 3 months.
RESULTS:
While the number of symptoms decreased, fatigue and dyspnea frequently persisted, whereas anosmia and dysgeusia declined. Cough and sputum decreased gradually. The proportion of patients with 5-9 symptoms increased. The mean (interquartile range) presenteeism scores were lower in the continuous (60 [50-80]) and relapse groups (65 [48-80]) than in the recovered group (70 [50-80]). The multiple symptoms cluster had the worst SF-36, presenteeism, and absenteeism scores (47.2 [44.7-49.8], 48.8 [27.5-72.5], and 10.9 [0.0-11.0], respectively).
CONCLUSIONS
Patients with continuous and multiple symptoms experienced persistently lower QOL and greater economic burden up to 36 months after COVID-19 diagnosis. The long-term effects of long COVID are not only physical but also mental and economical. Thus, further research is needed to clarify the economical and physiological impact of long COVID.
Adult
;
Aged
;
Aged, 80 and over
;
Female
;
Humans
;
Male
;
Middle Aged
;
COVID-19/complications*
;
Japan/epidemiology*
;
Post-Acute COVID-19 Syndrome/psychology*
;
Quality of Life
;
Retrospective Studies
;
Surveys and Questionnaires
;
East Asian People
3.Otorhinolaryngologic manifestations of long COVID-19 infection among patients at the Quezon City General Hospital
Ma. Nina Kristine C. Sison ; Emmanuel Tadeus S. Cruz
Philippine Journal of Otolaryngology Head and Neck Surgery 2024;39(2):32-36
Objective:
To determine the otorhinolaryngologic manifestations of long COVID-19 infection among patients consulting at the Quezon City General Hospital.
:
Methods
Design:
Cross-Sectional Study
Setting:
Tertiary Government Hospital
Participants:
Patients aged 18 years old and above, who previously tested positive for the SARS-COV-2 Test, and consulted with otolaryngologic problems at the Outpatient department, Emergency Room, or were dmitted, or referred from other services to the Department of Otorhinolaryngology Head and Neck Surgery, from October 2022 to January 2023 were considered for inclusion.
Results:
Out of 150 participants, 127 (84.67%) reported having otorhinolaryngologic symptoms. Five percent (5%) had ongoing symptomatic COVID-19 (4 to 12 weeks) and 11% had post COVID-19 syndrome (>12 weeks). Patients with long COVID-19 had rhinorrhea (54.51%), hyposmia (51.47%), dysgeusia (48.9%), anosmia (48.53%), sore throat (47.8%), ageusia (29.78%), tinnitus (23.53%), ear pain (23.53%), phantosmia (21.33%), and dizziness (11.76%). Out of 25 patients with long COVID, only 2 had pneumonia and 1 was hospitalized and eventually recovered.
Conclusion
This study showed a prevalence rate of 16% of long COVID-19 with rhinorrhea as the most prominent symptom. Long-term monitoring is essential and patients who had COVID should be advised to report any lingering illness which may subsequently develop. Physicians should be vigilant and aware of the clinical manifestations of long COVID in order to institute proper intervention.
COVID-19
;
SARS-CoV-2
;
Long COVID
;
Post-Acute COVID-19 Syndrome
;
Long Haul COVID-19
;
Post-Acute COVID-19 Syndrome
;
Rhinorrhea
4.Current insights into Covid-19 vaccination
Journal of Medicine University of Santo Tomas 2023;7(2):1252-1258
Almost a year after the worldwide appearance of the coronavirus (SARS-CoV-2), several novel vaccines of diverse platforms have been successfully developed and administered. Two mRNA vaccines represented a new type of vaccine that comprised of synthetic mRNA molecules containing the code sequence necessary to build the SARS-CoV-2 spike protein. These mRNA vaccines almost single handedly carried the brunt of the US COVID-19 immunization strategy during the past three years. The known and potential benefits of COVID-19 vaccination outweigh the risks and adverse complications. The ongoing COVID-19 pandemic has stimulated unprecedented research on aspects of the vaccines’ ability to reduce the risk of severe infection and death. Likewise, basic immunological studies are pivotal to unraveling the potential and long-term effects of the vaccines as well as to be able to make adjustments to new vaccine development. As the circulating virus strain continues to evolve, updated vaccines will be critical to protecting the population, particularly the elderly and immune compromised.
COVID-19
;
Vaccination
;
Post-Acute COVID-19 Syndrome
;
Myocarditis


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