Fri Jul 25 23:56:20 SGT 2014  
    Yellow Fever Vaccine, Nigeria

Yellow Fever Vaccine, Nigeria

Summary

Yellow Fever Vaccine, Nigeria @beautynigeria_com: Live attenuated yellow fever virus vaccine jab/shot/injection schedule, to vaccinate against the Yellow fever virus, to immunise against Yellow fever

Keywords: Yellow Fever Vaccine Nigeria, Nigeria Yellow Fever Vaccine, Yellow Fever Vaccine.

Description

The 17D vaccine, which is based on a live, attenuated viral strain, is the only commercially available yellow fever vaccine. It is given as a single subcutaneous (or intramuscular) injection. Yellow fever vaccine is highly effective (approaching 100%). All individuals aged 9 months or older and living in countries or areas at risk should receive yellow fever vaccine.

Precautions and contraindications

With the exception of very rare cases of vaccine-associated neurotropic and viscerotropic disease (see below), the 17D vaccine is generally considered to be safe. However, some vaccine recipients develop mild systemic reactions, including myalgia and headache. Contraindications include true allergy to egg protein, immunodeficiency (congenital or acquired) and symptomatic HIV infection (Chapter 9). There is a theoretical risk of harm to the fetus if the vaccine is given during pregnancy and vaccination of nursing mothers should be avoided because of the risk for the transmission of 17D virus to and encephalitis in the breast-fed infant.These risks must be weighed against the risk to the mother of remaining unvaccinated and travelling to an area where exposure to YFV may occur. In general, unvaccinated pregnant or nursing women should be advised not to travel to such areas.

Hypersensitivity reactions are rare, particularly anaphylactic reactions. However, the vaccine is produced in embryonated chicken eggs and is contraindicated in persons with a history of oral egg intolerance or strong allergic reactions to egg-based products.

Encephalitis has been reported as a rare event following vaccination, principally in infants under 6 months of age. As a result, the vaccine is contraindicated in infants under 6 months of age and is not recommended for those aged 6–8 months, except during epidemics when the risk of YFV transmission may be very high.

Vaccine-associated viscerotropic disease is a recently described adverse event that on very rare occasions has occurred after the first immunization with the yellow fever 17D vaccine. Onset is within 10 days of vaccination and the pathological process is characterized by severe multi-organ failure and an overall case—fatality rate in excess of 60%. Known risk factors include a history of thymus disease (e.g. thymoma or thymectomy) and age ≥ 60 years. In the United Sates, the risk for people aged ≥ 70 years of contracting viscerotropic disease after receiving vaccination against yellow fever is estimated to be 2.4 cases/100 000 vaccine doses.

Increased incidence of vaccine-associated neurotropic disease (e.g. meningoencephalitis, acute disseminated encephalomyelitis and Guillain-Barré syndrome) has been reported in infants under 6 months of age and in vaccine recipients aged ≥60 years . The reported rate of vaccine-associated neurotropic disease in travellers from the United States and Europe ranges between 0.13 and 0.8 per 100 000 doses.

Yellow fever vaccination is required for travellers to certain countries and recommended for all travellers to countries or areas with risk of yellow fever transmission (see Country list and Annex 1). The risk to unvaccinated individuals who visit countries or areas where there may be yellow fever transmission is often greater than the risk of a vaccine-related adverse event. While yellow fever vaccination should be encouraged as a key prevention strategy, it is important to screen travel itineraries and carefully evaluate the potential risk of systemic illness after yellow fever vaccination. Great care should be exercised not to prescribe yellow fever vaccination to individuals who are not at risk of exposure to infection, based on an accurate assessment of the travel itinerary. Although vaccination is generally not recommended for travellers going to areas where the risk of exposure is low, any risk (e.g. as a result of prolonged travel or heavy exposure to mosquito bites) should be weighed against individual risk factors for vaccine-associated adverse events (e.g. altered immune status).

Type of vaccine: Live, attenuated

Number of doses: One dose of 0.5 ml

Booster: Currently every 10 years (if re-certification is needed)

Contraindications: Infants aged less than 6 months; history of allergy to egg or to any of the vaccine components, or hypersensitivity to a previous dose of the vaccine; thymoma or history of thymectomy, immunodeficiency from medication, disease or symptomatic HIV infection.

Adverse reactions: Rarely, neurological (encephalitis) or multi-organ failure resembling wild-type yellow fever

Before departure: International certificate of vaccination becomes valid 10 days after vaccination.

Recommended for: All travellers to countries and areas with risk of yellow fever transmission and when required by countries.

Special precautions: Not recommended for infants aged 6-8 months, except during epidemics when the risk of YF virus transmission may be very high. The risks and benefits of vaccination in this age group should be carefully considered before vaccination. The vaccine should be avoided during pregnancy or breastfeeding. However, pregnant or nursing women may be vaccinated during epidemics or if traveling to country or area a risk of transmission is unavoidable.

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168 Bedok South Avenue 3 #01-473
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Tel: (+65) 6446 7446
Fax: (+65) 6449 7446
24hr Answering Tel: (+65) 6333 5550
Web: Yellow Fever Vaccine, Nigeria
Opening Hours
Monday to Friday: 9 am to 3 pm, 7 pm to 11 pm
Saturday & Sunday: 7 pm to 11 pm
Public Holidays: Closed
Last registration: one hour before closing time.
Walk-in clinic. Appointments not required.
Bring NRIC, Work Pass or Passport for registration.

References


Latest News

Current perspectives in transfusion‐transmitted infectious diseases: emerging and re‐emerging infections
Wed, 23 Jul 2014 00:00:00 +0100 | ISBT Science Series
ConclusionsThe process and final product (toolkit) including methods to monitor EID agent emergence, identification/recognition of a transfusion‐transmission threat, methods for quantitative risk assessments, and the appropriate management of such threats should be considered for implementation by all blood systems. (Source: ISBT Science Series)

Subdoses of 17DD yellow fever vaccine elicit equivalent virological/immunological kinetics timeline
Tue, 15 Jul 2014 00:00:00 +0100 | BMC Infectious Diseases
Conclusions:

Immune activation alters cellular and humoral responses to yellow fever 17D vaccine
Tue, 10 Jun 2014 01:00:07 +0100 | Journal of Clinical Investigation
Conclusion. Together, these results demonstrate that an activated immune microenvironment prior to vaccination impedes efficacy of the YF-17D vaccine in an African cohort and suggest that vaccine regimens may need to be boosted in African populations to achieve efficient immunity.Trial registration. Registration is not required for observational studies.Funding. This study was funded by Canada’s Global Health Research Initiative, Defense Threat Reduction Agency, National Institute of Allergy and Infectious Diseases, Bill & Melinda Gates Foundation, and United States Agency for International Development. (Source: Journal of Clinical Investigation)

[Vaccination and pregnancy.]
Fri, 23 May 2014 00:00:00 +0100 | Presse Medicale
Authors: Anselem O, Parat S, Théau A, Floret D, Tsatsaris V, Goffinet F, Launay O

Scientists predict dengue risk for Brazil World Cup
Mon, 19 May 2014 11:17:00 +0100 | NHS News Feed
Conclusion

Vaccines and vaccination against yellow fever: WHO Position Paper, June 2013-Recommendations.
Mon, 19 May 2014 00:00:00 +0100 | Vaccine
This article presents the World Health Organizations (WHO) evidence and recommendations for the use of yellow fever (YF) vaccination from "Vaccines and vaccination against yellow fever: WHO Position Paper - June 2013" published in the Weekly Epidemiological Record [1]. This position paper summarizes the WHO position on the use of YF vaccination, in particular that a single dose of YF vaccine is sufficient to confer sustained life-long protective immunity against YF disease. A booster dose is not necessary. The current document replaces the position paper on the use of yellow fever vaccines and vaccination published in 2003 [2]. Footnotes to this paper provide a number of core references. In accordance with its mandate to provide guidance to Member States on health policy matters, WHO issue...

Adverse events following yellow fever immunization: Report and analysis of 67 neurological cases in Brazil.
Wed, 14 May 2014 00:00:00 +0100 | Vaccine
Authors: Martins RD, Pavão AL, de Oliveira PM, Dos Santos PR, Carvalho SM, Mohrdieck R, Fernandes AR, Sato HK, de Figueiredo PM, von Doellinger VD, Leal MD, Homma A, Maia MD

The 2014 FIFA World Cup: Communicable disease risks and advice for visitors to Brazil – A review from the Latin American Society for Travel Medicine (SLAMVI)
Mon, 12 May 2014 00:00:00 +0100 | Travel Medicine and Infectious Disease
Summary: The next FIFA World Cup will be held in Brazil in June–July 2014. Around 600,000 international visitors and participants (as well over 3 million domestic travelers) are expected. This event will take place in twelve cities. This event poses specific challenges, given its size and the diversity of attendees, including the potential for the transmission of imported or endemic communicable diseases, especially those that have an increased transmission rate as a result of close human proximity, eg, seasonal influenza, measles but also tropical endemic diseases. In anticipation of increased travel, a panel of experts from the Latin American Society for Travel Medicine (SLAMVI) developed the current recommendations regarding the epidemiology and risks of the main communicable diseases...

Immune response to the mumps component of the MMR vaccine in the routine of immunisation services in the Brazilian National Immunisation Program.
Wed, 07 May 2014 00:00:00 +0100 | Memorias do Instituto Oswaldo Cruz
Authors: Santos EM, Sá GR, Siqueira MM, Martins RD, Camacho LA, von Doellinger VD, Maia MD

Mass vaccination campaigns reduce the substantial burden of yellow fever in Africa
Tue, 06 May 2014 23:07:30 +0100 | ScienceDaily Headlines
Yellow fever, an acute viral disease, is estimated to have been responsible for 78,000 deaths in Africa in 2013 according to new research. The research also estimates that recent mass vaccination campaigns against yellow fever have led to a 27 percent decrease in the burden of yellow fever across Africa in 2013. (Source: ScienceDaily Headlines)