Vaccine prophylaxis and diagnostics of viral hepatitis in Russia K.Kyuregyan, M.Mikhailov ФГБУ «Институт полиомиелита и вирусных энцефалитов им.М.П.Чумакова» Managua, November 26-28, 2014 I Russia-Nicaragua Symposium “Actual issues in diagnostic and vaccine prophylaxis of infectious diseases”
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Vaccine prophylaxis and diagnostics of viral hepatitis in Russia K.Kyuregyan, M.Mikhailov ФГБУ «Институт полиомиелита и вирусных энцефалитов
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Vaccine prophylaxis and diagnostics of viral hepatitis in Russia
K.Kyuregyan, M.Mikhailov
ФГБУ «Институт полиомиелита и вирусных энцефалитов им.М.П.Чумакова»
Managua, November 26-28, 2014
I Russia-Nicaragua Symposium “Actual issues in diagnostic and vaccine prophylaxis of
infectious diseases”
High level of heterogeneity of hepatitis viruses.
New diagnostic tests and vaccines.New knowledge on biology of hepatitis viruses.
Social, economic and epidemiology changes in country and in the world.
Globalization and migration contribute to distribution of viral hepatitis infections.
Van Herck & Van Damme, Expert Rev Vaccines 2005; 4: 459–71.WHO, Hepatitis A, WHO/CDS/CSR/EDC/2000.7
Hepatitis A: changing epidemiology
Improvements in
sanitary conditions
Decrease in HAV circulation in children
Increase in number
of susceptible
adolescents and adults
Increase in
non-immune adults
Increase in number of symptomatic hepatitis A cases
Meeting of the Strategic Advisory Groupof Experts on Immunization (SAGE)
10-12 April 2012CCV/CICG, Geneva
Monitoring the impact of a single doseHepatatis A vaccine administration in Argentina
Hepatitis A incidence before and after single dose vaccination of children at age 1 year in Argentina (2000-
2011)
C. Vizzotti, 2012
Tyva Republic
Tyva Republic is situated at South of Siberia. Distance to Moscow: 4 668 кмTerritory – 170,500 км2
Population (as for 1.01.2014 г.) - 311 761
Data from state surveillance system (Rospotrebnadzor)
Incidence of hepatitis A in children in 2001-2013 (cases per 100000 children population)
МИНИСТЕРСТВО ЗДРАВООХРАНЕНИЯ И СОЦИАЛЬНОГО РАЗВИТИЯ РЕСПУБЛИКИ ТЫВА
П Р И К А З « 18 » июля 2012 г. №
____/___г. КызылО массовой иммунизации детей, подростков против вирусного гепатита АВ Республику Тыва при содействии ФГБУ «Институт полиомиелита и вирусных
энцефалитов им. М.П. Чумакова» РАМН в рамках научно-практического сотрудничества с Министерством здравоохранения и социального развития Республики Тыва и Управления Федеральной службы по надзору в сфере защиты прав потребителей и благополучия человека по Республике Тыва по вопросам профилактики вирусных гепатитов и клещевых вирусных энцефалитов направлена вакцина против вирусного гепатита А «Хаврикс» в количестве 39611 доз компанией ЗАО «Глаксо Смит Кляйн Трейдинг» на безвозмездной основе для иммунизации детей Республики Тыва в возрасте 3-8 лет.
Вакцина поступила 19.07.2012 г. в отделение вакцинопрофилактики Республиканского Центра СПИД.
В целях успешной организации на территории Республики Тыва массовой иммунизации детского населения против гепатита А
Incidence of hepatitis А (per 1000 000) in Tyva Republic before (2012) and after (2013-2014) single dose vaccination in children at age 3-8
years
97,4
3,7 1,6
242,6
6,4 0,90
50
100
150
200
250
300
2012 2013 01 - 10.2014
0/00
00
Всего
Дети > 14 лет
By 12.2012 87% children of 3-8 years were vaccinated (about 40 000 children).
After vaccination start hepatitis A incidence decreased 26-fold (in 2013) and 61-fold (in 2014) in total population; in children: 38-fold (in 2013) and 270-fold in 2014.
During 01.-10.2014 total 5 cases were registered: 2 imported cases and 3 cases in non-vaccinated adults
The introduction of the single-dose mass vaccination in areas with intermediate hepatitis A endemicity will reduce the short-term economic costs of health care and the most efficient use of budgetary resources by protecting vaccinated population for several years, and completed the vaccination course with the use of a booster dose will provide long-term (at several decades) immunity in vaccinated.
We need to continue long-term monitoring of the epidemiological situation in Argentina, as well as to accumulate a similar experience in other regions of the world with transition hepatitis A.
World population7 billion.
2 billon. Have markers of current or past HBV infection
300-400 mln. – chronic HBV infection
25% have risk of death from cirrhosis or HCC
WHO and CDC fact sheets, available at www.who.int and www.cdc.gov
Prevalence of HBV infection and its consequences
Hepatitis B recombinant vaccines
• Protective antigen - HBsAg
• HBV gene coding the protective surface antigen is inserted into yeast genome
HBsAgГен, кодирующий HBs Ag
Вирус гепатита ВУчасток ДНК вируса, кодирующий HBs Ag,
Ген, кодирующий HBs Ag,
встроен в ДНК дрожжевой
клетки
Ферментация дрожжевых клеток
Экстракция иочистка HBsAg
Формулированиевакцины
• Vaccination against hepatitis B is included in National vaccination Calendar in December 1997 (Newborn vaccination)
• National project «Health» - vaccination of adolescents and adults
• The proportion of susceptible to HBV individuals in total population is still high
Incidence of acute hepatitis B in Russia in 1994-2012 (cases per 100 000)
25,1
32,135,836,635,7
43,342,2
34,9
19,78
13,110,4
6,995,264,04 2,7 2,221,711,42
8,56
05
101520253035404550
годы
пок
азат
ели
заб
олев
аем
ости
гепатит В
Incidence of acute and chronic hepatitis B in Russia
6,99
14,01
5,26
14
4,04
14,19
2,7
14,39
2,2
13,27
1,71
12,95
1,42
12,6
0
2
4
6
8
10
12
14
16
2006 2007 2008 2009 2010 2011 2012
острый гепатит B
хронический гепатит B
Пок
азат
ель
на
100
000
нас
елен
ия
Prevalence of HBsAg in different age groups in 6 regions of Russia
Assessing the impact of mass vaccination against hepatitis B in Russia
• Flexible mathematical model to assess the morbidity and mortality associated with HBV;
• Natural history and outcomes of HBV infection;• Prevalence of hepatitis B markers in discrete groups (women
of childbearing age, children under five years of age and adults from thirty years old and older).
Goldstein ST, Zhou F, Hadler SC, et al. A mathematical model to estimate global Hepatitis B disease burden and vaccination
impact. Int J Epidemiol 2005;34: 1329-39.
Estimated number of cases of HBV infection and associated deaths, its outcomes depending performed and non performed vaccination
•
Without vaccination
With vaccination Prevented Decrease, %
HBV infection, Total number of cases 212 075 - 405 438 20 711 - 40 493 191 364 - 364 945 90%
Prevalence of HDV markers in healthy population of Tyva Republic, % (N=1086)
Age, years N Anti-HDVn %
HDV RNAn %
< 1 97 0 0 0 0
1-4 109 0 0 0 0
5-9 113 0 0 0 0
10-14 107 2 1,9 0 1,9
15-19 105 4 3,8 4 1,9
20-29 102 4 3,9 3 2,9
30-39 103 5 4,9 3 2,3
40-49 112 6 5,4 1 0,7
50-59 115 2 1,7 1 0,8
> 60 123 4 3,3 2 1,6
Total 1086 27 2,5 14 1,3
Dr. Mikhail Balayan
August, 12, 1981 - Oral infection combined extracts containing stool samples from 9 patients with the second episode of hepatitis
Family Hepeviridae
Genome + RNA
Virion 30-34 nm
RNA length 7.2 kb
Stability Low
Infectious virus titer in feces
104 – 107
Hepatitis E virus
Russian Federation, 2013 92 cases 0,06/ 100 000
Belgorod region, 2013 33 cases 2,15/ 100 000
Anti-HEV IgG prevalence in6 regions of Russia (n=6000)
7,54,9
2,6 2,1
5,3
2,24,1
02468
% а
нти-
ВГЕ
1 2 3 4 5 6 7
возрастная структура анти-ВГЕ IgG
0
5
10
15
20
25
30
1 2 3 4 5 6 7
регионы
an
ti-
HE
V, %
до 19 лет
20 - 59 лет
> 60 лет
• 1 – Moscow region• 2 – Rostov region• 3 – Sverdlovsk region• 4 – Yakutiya• 5 – Tyva• 6 – Khabarovsk region• 7 – median for 6 regions
Данные ИПВЭ им М.П. Чумакова РАМН, 2010
R.H. Purcell, S.U. Emerson Hepatitis E: An emerging awareness of an old disease // J. Hepatol. 2008 48(3):494-503
3
Hepatitis E - zoonoses
Т
Three proofs that hepatitis E - zoonoses:1. HEV prevalence in animals;2. Elevated levels of detection of anti - HEV antibodies in pig farm workers;3. Confirmed cases of HEV transmission from animals to human.
4173ekat.1 4357ekat.3 4172ekat.1 4352ekat.3 4178ekat.1 4198ekat.2 4199ekat.2 4156ekat.1 4191ekat.1 4410sar.1 4591sar.3 4196ekat.2 4194ekat.2 5512arch.3 5525arch.3 5435arch.3 5320arch.1 5353arch.2 5376arch.2 5354arch.2 5374arch.2 4192ekat.2 4131ekat.1 4313ekat.3 AF455784 H.3g 4952khab.3 AF336296 3f AY323506 3f AF332620 3f AY032758 3f AY032757 3f AY362357 H.3e AF503512 3e AB094231 3e AB073911 3e 4835khab.1 4892khab.1 5107kalin.1 5151kalin.2 5109kalin.1 5130kalin.2 3990vlad 3950vlad 3951vlad 3968vlad 3974vlad 3973vlad 3948vlad AB105903 S.3a AP003430 H.3b AF296167 H.3d AY115488 S.3j 4586sar.2 4631sar.3 4610sar.3 4677sar.3 4539sar.2 4863khab.1 4502sar.2 4579sar.2 FJ998010 3i FJ998012 3i AF336293 3c AF336290 S.3c AF336298 3c AF336297 3c AB097811 Japan HEV type IV M74506 HEV2 Mexico DQ450072 China HEV type IV AY723745 India HEV type IV
AY594199 China HEV type IV M73218 Burma H. E virus type I D10330 Burma HEVNE8L type I AF051830 Nepal HEV TK15/92 type I X99441 India HEV type I X98292 India hev037 type I M80581 Pakistan HEV type I D11093 China HEV type I L25547 China HEV type I M94177 China HEV type I
88100
7690
100
98
100
100
87
100
95
100
80100
100
100
100
98100
100
100
97
91
100
100
98
100
87
98
98
78
100
0.000.020.040.060.080.10
Гено
тип
3 ВГ
Е
Phylogenetic tree for HEV isolates from pigs: Archangelsk region, Vladimir region, Kaliningrad region, Saratov region, Sverdlovsk region, Khabarovsk region
Detection of HEV infection in pigs
18,2
69,5
50
15,8
000
10
20
30
40
50
60
70
80
0-30 31-60 61-90 91-120 121-150 > 150
В озрас т жив отны х, дни
РН
К В
ГЕ
%
Vaccine against hepatitis EVaccine Producent Trial phase N
participantsEfficacy
56 kDa ORF2 HEV1
Insect cells II 898 95,5%
26 kDa ORF2 HEV1
E. coli II 457 83%
III 56,302 100%
Vaccine was protective against HEV genotypes 3&4 in pigs and rabbits challenge experiments – veterinary vaccine
ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ ИНСТИТУТ ПОЛИОМИЕЛИТА И ВИРУСНЫХ ЭНЦЕФАЛИТОВ ИМЕНИ М.П.ЧУМАКОВА РОССИЙСКОЙ АКАДЕМИИ МЕДИЦИНСКИХ НАУК