Shingles (Herpes Zoster) Vaccine (Zostavax®): A Review of Its Use in the Prevention of Herpes Zoster and Postherpetic Neuralgia in Adults Aged ≥50 Years

Subcutaneous acupuncture improves acyclovir-ineffective cephalofacial herpes zoster: A case report

RATIONALE

Herpes zoster is a common skin disease that manifests as clustered herpes, postherpetic neuralgia (PHN), and other herpes zoster-related complications, as well as eye diseases and various visceral diseases. Pharmaceutical therapy may cause adverse responses and has limited efficacy. Therefore, exploring alternative and effective therapies is important for clinical physicians.

PATIENT CONCERNS

The patient was a 62-year-old female. She suffered from clustered herpes in her left forehead and head, which caused severe pain. The patient had received pharmaceutical therapy but did not respond to it.

DIAGNOSES

Cephalofacial herpes zoster.

INTERVENTIONS

The patient underwent a 1-week course (4 sessions) of subcutaneous acupuncture. The treatment involved fire acupuncture (swift pricking) and common acupuncture (transverse insertion), both of which were performed on the superficial skin layer.

OUTCOMES

After the 4 treatment sessions, the patient's herpes disappeared quickly, and the pain was relieved. After the 12-month follow-up, the patient had no PHN.

LESSONS

Subcutaneous acupuncture improved the skin lesions condition of herpes zoster rapidly, and relieved the neuralgia effectively. It may prevent the PHN. For patients who are nonresponsive to antiviral medications, especially the elderly population at a high risk of developing PHN, subcutaneous acupuncture (fire acupuncture + common acupuncture) can be considered.

Turning the Tide against Herpes Zoster in Rheumatoid Arthritis Patients Treated with JAK Inhibitors

Objectives: This study aimed to evaluate the incidence of Herpes Zoster (HZ) in patients with rheumatoid arthritis (RA) treated with Janus kinase inhibitors (JAKi), and to predict potential risk factors for HZ development. Methods: We retrospectively analysed medical records from RA patients at our rheumatology unit who met the 2010 ACR/EULAR criteria for RA and were receiving JAKi. The incidence and course of HZ were assessed through chart review and supplementary phone interviews. Results: A total of 198 JAKi-treated patients were monitored for an average of 18.5 months. Nine subjects experienced HZ, resulting in an incidence of 2.95 per 100 patient-years. No demographic or treatment-related differences were found among patients who developed HZ and those who did not. Disease duration (OR: 1.06, 95% CI: 1.01-1.12), time on JAKi treatment (OR: 1.04, 95% CI: 1.009-1.073), higher disease activity at JAKi initiation (OR: 4.16, 95% CI: 1.07-16.17), and at 3-month follow-up (OR: 6.0, 95% CI: 1.35-26.60) were identified as predictors of HZ occurrence. Thirty-six patients received vaccination against HZ, and none reported adverse reactions or flare-ups during a mean follow-up of 9.6 months. Conclusions: The incidence of HZ aligns with published data, suggesting that disease and treatment duration, as well as disease activity, are significant predictors of HZ in RA patients on JAKi therapy. Vaccination against HZ proved to be safe and effective, underscoring its potential protective value in this patient population.

Community-Based Cross-Sectional Assessment Survey On Herpes Zoster Vaccination Practices

Background

Herpes Zoster (HZ), also known as Shingles, is a commonly occurring infection especially among the elderly. It is due to the reactivation of the dormant virus in the sensory ends that were present since the primary infection with the virus.

Objective

Our study aims at assessing the knowledge, attitudes practices beliefs and current barriers towards the Shingrix vaccine to fully understand where we stand and come up with proper recommendations to services these at-risk individuals and ultimately have a positive impact on the healthcare system.

Methods

Questionnaire based cross sectional study using a translated version of a previously developed and tested questionnaire.

Results

more than 8000 participants responded to the survey. The vast majority had chicken pox before and did hear about the vaccine from different sources. Most of the participants had minimal knowledge regarding the vaccine and were willing to take it regardless of some safety concerns.

Conclusion

more efforts need to be conducted to enhance vaccine uptake in at risk populations in Saudi Arabia.

Reactivation of Herpes Zoster After Recombinant Vaccine (Shingrix): A Case Report

Herpes zoster (HZ) is a common contagious dermatological condition that results from reactivation of varicella-zoster virus (VZV), which currently could be prevented by vaccination. We describe a rare case of varicella infection reactivation after routine zoster vaccination in an immunocompetent female in her 60s who developed dermatomal pruritic and vesicular rash one week after receiving Shingrix vaccine, along with fever, sweating, headache, and fatigue. The patient was treated as a case of herpes zoster reactivation with a seven days course of acyclovir. She continued to do well on follow-up with no significant complications. Though uncommon, it is important for healthcare providers to recognize this adverse reaction to expedite testing and treatment.

Insights into the pathogenesis of varicella viruses

Purpose of review

Varicella zoster virus (VZV) is a highly contagious, neurotropic alpha herpes virus that causes varicella (chickenpox). VZV establishes lifelong latency in the sensory ganglia from which it can reactivate to induce herpes zoster (HZ), a painful disease that primarily affects older individuals and those who are immune-suppressed. Given that VZV infection is highly specific to humans, developing a reliable in vivo model that recapitulates the hallmarks of VZV infection has been challenging. Simian Varicella Virus (SVV) infection in nonhuman primates reproduces the cardinal features of VZV infections in humans and allows the study of varicella virus pathogenesis in the natural host. In this review, we summarize our current knowledge about genomic and virion structure of varicelloviruses as well as viral pathogenesis and antiviral immune responses during acute infection, latency and reactivation. We also examine the immune evasion mechanisms developed by varicelloviruses to escape the host immune responses and the current vaccines available for protecting individuals against chickenpox and herpes zoster.

Recent findings

Data from recent studies suggest that infected T cells are important for viral dissemination to the cutaneous sites of infection as well as site of latency and that a viral latency-associated transcript might play a role in the transition from lytic infection to latency and then reactivation.

Summary

Recent studies have provided exciting insights into mechanisms of varicelloviruses pathogenesis such as the critical role of T cells in VZV/SVV dissemination from the respiratory mucosa to the skin and the sensory ganglia; the ability of VZV/SVV to interfere with host defense; and the identification of VLT transcripts in latently infected ganglia. However, our understanding of these phenomena remains poorly understood. Therefore, it is critical that we continue to investigate host-pathogen interactions during varicelloviruses infection. These studies will lead to a deeper understanding of VZV biology as well as novel aspects of cell biology.

Evaluation of Varicella-zoster virus-specific cell-mediated immunity by interferon-γ Enzyme-Linked Immunosorbent Assay in adults ≥50 years of age administered a herpes zoster vaccine

Varicella-zoster virus (VZV)-specific cell-mediated immunity (CMI) is critical for preventing and controlling the onset of herpes zoster (HZ). To assess VZV CMI, an interferon-γ (IFN-γ) enzyme-linked immunosorbent assay (ELISA) was validated by examining the influence of VZV-specific antigen content, incubation time, and interval from whole blood collection on the assay. In phase II clinical trial, VZV-specific CMI in adults ≥50 years of age administered an HZ vaccine were evaluated by IFN-γ ELISA, as determined by measuring IFN-γ production in the whole blood in response to stimulation with ultraviolet light-inactivated VZV. The VZV-specific IFN-γ levels varied among individuals from prevaccination (baseline) to 6 weeks postvaccination. In most subjects, VZV-specific CMI was increased at 6 weeks postvaccination. The HZ vaccine elicited a significant increase in the VZV-specific CMI response as measured by ELISA; the geometric mean fold-rises from baseline to 6 weeks postvaccination were 3.50, 4.22, and 5.24 in the 4.3, 4.7, and 4.9 log plaque-forming unit vaccine groups, respectively, which was significantly higher than in the placebo group (P < 0.05). These results indicate that vaccination enhances the VZV-specific CMI responses in subjects; IFN-γ ELISA is an effective method for evaluating the CMI response and may be useful for identifying individuals at a high risk of HZ infection.

Robust gene expression changes in the ganglia following subclinical reactivation in rhesus macaques infected with simian varicella virus

Varicella zoster virus (VZV) causes varicella during acute infection and establishes latency in the sensory ganglia. Reactivation of VZV results in herpes zoster, a debilitating and painful disease. It is believed that VZV reactivates due to a decline in cell-mediated immunity; however, the roles that CD4 versus CD8 T cells play in the prevention of herpes zoster remain poorly understood. To address this question, we used a well-characterized model of VZV infection where rhesus macaques are intrabronchially infected with the homologous simian varicella virus (SVV). Latently infected rhesus macaques were thymectomized and depleted of either CD4 or CD8 T cells to induce selective senescence of each T cell subset. After T cell depletion, the animals were transferred to a new housing room to induce stress. SVV reactivation (viremia in the absence of rash) was detected in three out of six CD8-depleted and two out of six CD4-depleted animals suggesting that both CD4 and CD8 T cells play a critical role in preventing SVV reactivation. Viral loads in multiple ganglia were higher in reactivated animals compared to non-reactivated animals. In addition, reactivation results in sustained transcriptional changes in the ganglia that enriched to gene ontology and diseases terms associated with neuronal function and inflammation indicative of potential damage as a result of viral reactivation. These studies support the critical role of cellular immunity in preventing varicella virus reactivation and indicate that reactivation results in long-lasting remodeling of the ganglia transcriptome.

Looking back to move forward: a twenty-year audit of herpes zoster in Asia-Pacific

Background

Herpes zoster (HZ) is a prevalent viral disease that inflicts substantial morbidity and associated healthcare and socioeconomic burdens. Current treatments are not fully effective, especially among the most vulnerable patients. Although widely recommended, vaccination against HZ is not routine; barriers in Asia-Pacific include long-standing neglect of adult immunisation and sparse local data. To address knowledge gaps, raise awareness, and disseminate best practice, we reviewed recent data and guidelines on HZ from the Asia-Pacific region.

Methods

We searched PubMed, Scopus, and World Health Organization databases for articles about HZ published from 1994 to 2014 by authors from Australia, China, Hong Kong, India, Indonesia, Japan, Korea, Malaysia, New Zealand, the Philippines, Singapore, Taiwan, Thailand, and Vietnam. We selected articles about epidemiology, burden, complications, comorbidities, management, prevention, and recommendations/guidelines. Internet searches retrieved additional HZ immunisation guidelines.

Results

From 4007 retrieved articles, we screened-out 1501 duplicates and excluded 1264 extraneous articles, leaving 1242 unique articles. We found guidelines on adult immunisation from Australia, India, Indonesia, Malaysia, New Zealand, the Philippines, South Korea, and Thailand.

HZ epidemiology in Asia-Pacific is similar to elsewhere; incidence rises with age and peaks at around 70 years – lifetime risk is approximately one-third. Average incidence of 3–10/1000 person-years is rising at around 5% per year. The principal risk factors are immunosenescence and immunosuppression. HZ almost always causes pain, and post-herpetic neuralgia is its most common complication. Half or more of hospitalised HZ patients have post-herpetic neuralgia, secondary infections, or inflammatory sequelae that are occasionally fatal. These disease burdens severely diminish patients’ quality of life and incur heavy healthcare utilisation.

Conclusions

Several countries have abundant data on HZ, but others, especially in South-East Asia, very few. However, Asia-Pacific countries generally lack data on HZ vaccine safety, efficacy and cost-effectiveness. Physicians treating HZ and its complications in Asia-Pacific face familiar challenges but, with a vast aged population, Asia bears a unique and growing burden of disease. Given the strong rationale for prevention, most adult immunisation guidelines include HZ vaccine, yet it remains underused. We urge all stakeholders to give higher priority to adult immunisation in general and HZ in particular.

Electronic supplementary material

The online version of this article (doi:10.1186/s12879-017-2198-y) contains supplementary material, which is available to authorized users.

Shingles (Herpes Zoster) Vaccine (Zostavax(®)): A Review in the Prevention of Herpes Zoster and Postherpetic Neuralgia

Zostavax(®) is a live attenuated shingles (herpes zoster) vaccine approved in the EU for the prevention of herpes zoster (HZ) and postherpetic neuralgia (PHN) in adults aged ≥50 years. Zoster vaccine protected against HZ in adults aged 50-59 years (ZEST trial) and ≥60 years [Shingles Prevention Study (SPS)], and also reduced the burden of illness associated with HZ and the risk of PHN in adults aged ≥60 years (SPS). A large amount of real-world data also supports the efficacy of zoster vaccine. Results of the SPS Short- and Long-Term Persistence Substudies and real-world studies indicate that zoster vaccine provided continued benefit in the longer term, albeit with a gradual decline in vaccine efficacy over time; long-term effectiveness studies are ongoing. The need for a booster dose is still unknown, but a study showed that, if necessary, a booster dose administered to adults aged ≥70 years who received their first dose of zoster vaccine ≥10 years previously was immunogenic. Zoster vaccine had a favourable safety and tolerability profile, with the most commonly reported adverse events being non-severe injection-site reactions. In conclusion, zoster vaccine reduces the incidence of HZ and PHN, thereby reducing the burden of illness associated with HZ; improved uptake of zoster vaccine is needed.

Herpes zoster and the search for an effective vaccine

Primary infection with varicella zoster virus (VZV), an exclusively human neurotrophic alphaherpsesvirus, results in varicella, known more commonly as chickenpox. Like other alphaherpesviruses, VZV establishes latency in the sensory ganglia and can reactivate to cause herpes zoster (also known as shingles), a painful and debilitating disease, especially in elderly and immunocompromised individuals. The overall incidence of herpes zoster in Europe and the United States is three per 1000 people, but increases sharply after 60 years of age to 10 per 1000 people. Zostavax® is a vaccine approved by the Federal Drug Administration for the prevention of herpes zoster. Unfortunately, this vaccine reduces the incidence of disease by only 51% and the incidence of post-herpetic neuralgia by 66·5% when administered to those aged 60 and older. Moreover, it is contraindicated for individuals who are immunocompromised or receiving immunosuppressant treatments, although they are at higher risk for herpes zoster compared to immune-competent older individuals. This paper reviews VZV pathogenesis, host responses and current vaccines available to prevent herpes zoster.

Evaluation of the economic burden of Herpes Zoster (HZ) infection

The main objective of this systematic review was to evaluate the economic burden of Herpes Zoster (HZ) infection.   The review was conducted in accordance with the standards of the "Preferred Reporting Items for Systematic Reviews and Meta-Analyses" guidelines. The following databases were accessed: ISI/Web of Knowledge (WoS), MEDLINE/PubMed, Scopus, ProQuest, the Cochrane Library and EconLit. Specific literature on health economics was also manually inspected. Thirty-three studies were included. The quality of the studies assessed in accordance with the Consolidated Health Economic Evaluation Reporting Standards checklist was good. All studies evaluated direct costs, apart from one which dealt only with indirect costs. Indirect costs were evaluated by 12 studies. The economic burden of HZ has increased over time. HZ management and drug prescriptions generate the highest direct costs. While increasing age, co-morbidities and drug treatment were found to predict higher direct costs, being employed was correlated with higher indirect costs, and thus with the onset age of the disease. Despite some differences among the selected studies, particularly with regard to indirect costs, all concur that HZ is a widespread disease which has a heavy social and economic burden.

The immunogenicity and safety of zoster vaccine in Taiwanese adults

The efficacy and safety of ZOSTAVAX in subjects 60 years of age and older was established in the Shingles Prevention Study (SPS) and in subjects 50 to 59 years of age in the ZOSTAVAX Efficacy and Safety Trial (ZEST). We evaluated the safety and immunogenicity of ZOSTAVAX in a total of 150 Taiwanese subjects ≥50 years of age, who received a single dose of ZOSTAVAX. gpELISA was used to determine geometric mean titers (GMT) of the varicella-zoster virus (VZV) antibody. The geometric mean fold rise (GMFR) of the VZV antibody from the pre-vaccination to the 4 week post-vaccination time point was calculated. There was an overall increase in GMT from 128.45 to 391.85 at 4 weeks post-vaccination. The estimated GMFR was 3.05 (95% CI: 2.60 to 3.57).There were no serious adverse events for 28 days following vaccination. This study demonstrated the safety and immunogenicity of ZOSTAVAX among healthy Taiwanese adults.

Safety and effectiveness of the herpes zoster vaccine to prevent postherpetic neuralgia: 2014 Update and consensus statement from the Canadian Pain Society

During the Canadian Pain Society Study Day, held in July 2014, a panel of individuals was selected to prepare a Canadian Pain Society consensus statement regarding the use of the herpes zoster vaccine in Canada. The resulting statement summarizes the benefits of the herpes zoster vaccine, situations in which vaccination is useful and situations in which it is contraindicated.

The Canadian Pain Society (CPS) hosted its first Study Day in Toronto in July 2014, attended by experts in various fields of pain management and research (listed below). The aim was to review the National Advisory Committee on Immunization guidelines and to prepare a CPS position statement concerning the use of the zoster vaccine in Canada.

Ocular herpes: the pathophysiology, management and treatment of herpetic eye diseases

Herpesviruses are a prominent cause of human viral disease, second only to the cold and influenza viruses. Most herpesvirus infections are mild or asymptomatic. However, when the virus invades the eye, a number of pathologies can develop and its associated sequelae have become a considerable source of ocular morbidity. The most common culprits of herpetic eye disease are the herpes simplex virus (HSV), varicella zoster virus (VZV), and cytomegalovirus (CMV). While primary infection can produce ocular disease, the most destructive manifestations tend to arise from recurrent infection. These recurrent infections can wreck devastating effects and lead to irreversible vision loss accompanied by a decreased quality of life, increased healthcare usage, and significant cost burden. Unfortunately, no method currently exists to eradicate herpesviruses from the body after infection. Treatment and management of herpes-related eye conditions continue to revolve around antiviral drugs, although corticosteroids, interferons, and other newer therapies may also be appropriate depending on the disease presentation. Ultimately, the advent of effective vaccines will be crucial to preventing herpesvirus diseases altogether and cutting the incidence of ocular complications.

Vaccination against and treatment of acute herpes zoster for prevention of post-herpetic neuralgia

Zostavax (zoster vaccine) is a 1-dose, high-potency, live, attenuated varicella zoster virus (VZV) vaccine that boosts VZV-specific cell-mediated immunity (CMI), and this is its presumed mechanism of action. Other strategies focus on preventing the major complication of HZ, post-herpetic neuralgia (PHN). Evidence that the vaccine is effective in older patients comes from the pivotal Shingles Prevention Study. That study demonstrated that HZ vaccine significantly reduced morbidity due to HZ and PHN in older patients. However, the duration of efficacy beyond 5 years after vaccination remains unclear. The Long-Term Persistence Substudy, currently under analysis, may provide additional data on the duration of efficacy for zoster vaccine. This review discusses vaccination against HZ, and further reviews recent pharmacotherapy for prevention of PHN.