A Cross-over, Open-label, Single-group Study to Evaluate the Safety and Immunogenicity of Live Attenuated Varicella Vaccine Skyvaricella Injection (Inj.) Developed by SK Bioscience (Company Limited) Co., Ltd of South Korea in Healthy Volunteer Vietnamese Children From 12 Months to 12 Years Old

This is a cross-over, open-label, single-group study. The study subjects were children 12 months to 12 years of age who will be vaccinated with a single dose. The duration of follow-up for safety evaluation and immunogenicity (on a small group) is 6 weeks (+ 2 weeks).
The main target:
• Evaluating the safety of live attenuated Varicella vaccine [Oka / SK], lyophilized powder and solvent for subcutaneous injection (SKYVaricella inj.) in healthy Vietnamese children from 12 months to 12 years, with a single injection.
Secondary target:
• Assess the immunogenicity of live attenuated Varicella vaccine [Oka / SK], lyophilized powder and solvent for subcutaneous injection (SKYVaricella inj.) in a small group of healthy Vietnamese children from 12 months to 12 years, with a single injection.

Start Date17 Apr 2021

Sponsor / Collaborator

The Company for Vaccine & Biological Production No. 1

100 Clinical Results associated with Live attenuated varicella live virus vaccine (Vabiotech)

100 Translational Medicine associated with Live attenuated varicella live virus vaccine (Vabiotech)

100 Patents (Medical) associated with Live attenuated varicella live virus vaccine (Vabiotech)

Literatures (Medical) associated with Live attenuated varicella live virus vaccine (Vabiotech)

31 Dec 2024·Human Vaccines & Immunotherapeutics

The impact of the implementation of the two-dose varicella vaccine immunization strategy in Quzhou: A retrospective birth cohort study

Article

Author: Wen, Tingcui ; Pan, Jie ; Fu, Canya ; Zheng, Canjie ; Yin, Zhiying ; Xu, Wenjie ; Fang, Quanjun ; Zheng, Biyun

Varicella is a vaccine-preventable disease caused by the varicella zoster virus (VZV), but the varicella incidence among children has increased in recent years. This was a retrospective birth cohort study based on the Zhejiang Provincial Immune Information System (ZJIIS) and the China Information System for Disease Control and Prevention (CISDCP) in Quzhou. A total of 1,291 clinically diagnosed varicella cases born from 2009 to 2014 were collected during 2009-2023, which were analyzed the impact of changes in vaccination strategy on the incidence of varicella based on the Cox-proportional hazards model. It was observed that the onset age of varicella shifted to the older age group and later to 9-11 years. After the change to the two-dose varicella vaccination strategy, the population affected by varicella was concentrated among students and received more than one dose of live attenuated varicella vaccine (VarV). Based on the Coxproportional hazards model and adjusting for all covariates, the risk of varicella infection in children decreased after the introduction of the two-dose varicella vaccination strategy (HR = 0.04, 95% CI: 0.03-0.05). Meanwhile, the Kaplan-Meier curves also showed that the hazards were lower after the change in vaccination strategy. It is recommended that two doses of VarV should be included in the national immunization schedule and that full vaccination should be completed approximately four years after the first dose.

01 Nov 2024·Research in Veterinary Science

Comparison of viraemia and nasal shedding after PRRSV-1 challenge following vaccination with three commercially available PRRS modified live virus vaccines

Article

Author: Hancox, Laura ; Scott-Baird, Emer ; Mah, Choew Kong ; Balasch, Monica ; Angulo, Jose

The effectiveness of three Porcine Reproductive and Respiratory Syndrome (PRRS) Modified Live Virus (MLV) vaccines against PRRSV viraemia and nasal shedding following experimental challenge was compared. The study comprised a negative control (T01), and three treatment groups (T02, T03 and T04) each vaccinated with a single dose of a commercial PRRS MLV vaccine, given in accordance with the vaccine's Summary of Product Characteristics (SPC). Pigs aged 21 days were vaccinated (day 0), challenged intranasally (day 28) with heterologous PRRSV-1-1 strain Olot/91, then monitored for PRRSV viraemia and nasal shedding for 12 days. After challenge, pigs were viraemic on fewer days in group T04 (0.67) than groups T01 (0.91), T02 (0.81) and T03 (0.97) (P < 0.0296). From day 34, inclusive, serum PRRSV titres were lower in group T04 than negative controls (P ≤ 0.0001) and groups T02 and T03 (P ≤ 0.0047); serum PRRSV titre Area Under the Curve (AUC) for group T04 (42.34) was lower than in T01 (65.49), T02 (60.67) and T03 (67.38) (P < 0.0100); pigs exhibited nasal shedding on fewer days in group T04 (0.40) than T01 (0.78), T02 (0.64) and T03 (0.56) (P < 0.0101); and nasal shedding AUC for group T04 (8.52) was lower than in groups T01 (23.59, P < 0.0001) and T02 (19.37, P = 0.0001). The ability of PRRS MLV vaccines to reduce the duration of viraemia and nasal shedding after intranasal challenge with a heterologous PRRSV-1-1 strain differ significantly.

01 Nov 2023·American Journal of Transplantation

Balancing the live virus vaccine scales: Protection vs risk

Communications

Author: Posfay-Barbe, Klara M ; Danziger-Isakov, Lara

100 Deals associated with Live attenuated varicella live virus vaccine (Vabiotech)

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Indication	Country/Location	Organization	Date
Chickenpox	KR	SK Biopharmaceuticals Co., Ltd.	04 Jun 2018

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