Souvik Ghosh, Nobumichi Kobayashi
British Journal of Virology
...velopment or judging the efficacy of existing RVA vaccines, they do not always provide conclusive information on the overall and complex genetic makeup of RVAs, as the remaining 9 RVA gene segments are also susceptible to the forces governing RVA genetic diversity. Whole genomic analysis of RVAs has revolutionized the study of RVA genomics, providing a plethora of conclusive and vital data on the overall genetic diversity, true origin and complex evolutionary ...
Ye Liu2, Yulong Cong2, Yiming Shao1*
...using for optimizing the efficacy of vaccines. By highlighting preclinical/clinical applications of Tat and its working mechanisms, this review exhibits the superior potential of Tat as immunoregulator on optimizing immune responses mediated by vaccines. These examples of selected studies will provide researchers some implications and inspirations for using HIV Tat to optimize immune responses of vaccines....
Rashid Saleem1*, Zammurad Iqbal Ahmad2, Muhammad Abbas Anees2, Abdul Razzaq3 and Ashiq Saleem1
...arried out to assess the efficacy of maize + mungbean intercropping systems under different fertility treatments at National Agriculture Research Centre (NARC) Islamabad, Pakistan. Cropping systems were kept in vertical blocks and fertility treatments in horizontal blocks replicated thrice with RCBD strip block system. Sole mungbean and intercropped mungbean with maize were treated with five fertility treatments (T1, control; Phosphorus and Potash (PK) (80-60 ...
Mohammed A. Rohaim1*, Rania F. El-Naggar2, Abdulrahman M. Gamal3, Elshaimaa Ismael3, Mohamed M. Hamoud4, Sherif T. Moubarak3, Ashraf M. Metwally1, Manal M. Zaki3, Shimaa A.E. Nasr3, Samah Elsaid3, Mohamed M. Ali3, Hussein A. Hussein1 and Osama K. Zahran3
Email: mohammedvet1986@gmail.com; mohammed_abdelmohsen@cu.edu.eg
Shumaila Manzoor1, Afshan Ahmed1 and Muhammad Abubakar2*
...performed to compare the efficacy of two techniques i.e. serum neutralization test (SNT) and solid-phase competitive ELISA (SPCE) for foot and mouth disease virus (FMDV) structural antibodies detection in terms of their sensitivity and specificity. These methods were performed by using set of sera collected from cattle with foot-and-mouth disease vaccination. The pattern of antibody titers in animals of different age groups was observed as ...
Muhammad Arif Zafar1, Murtaz-ul-Hasan1*, Aayesha Riaz1, Asim Shamim2, Muhammad Farooq Iqbal1 and Arfan Yousaf
E-mail | murtazhassan@yahoo.com
...ators and to compare its efficacy with autogenous vaccine alone and partial excision of the lesions. To this end, nine animals were selected clinical and sporadic papillomas different body parts. These animals were divided into three groups; Group A animals were operated for partial excision of the lesions, Group B were inoculated with autogenous vaccine alone and Group C were treated with inoculation of autogenous vaccine supplemented with immune-modulat...
Rashid Mahmood1*, Saima Asad2, Waqar Ahmad1, Ghulam Sarwar1, Muhamamd Khalid Rafique1, Noor Islam1, Ziyad Abdul Qadir1 and Zain Ul Abiden2
...espectively. The average efficacy (%) of the four groups were 86±.58, 66.5±3.93, 75±7.04, 18.25± 10.25 in winter, 77±3.52, 76.75±30, 79±2, 18.25±0.75 in spring and 74.75±1.44, 65.75±1.11, 63±2.04, 18.25±1.11 in summer season, respectively. No queens were lost, and there was no adult honeybee mortality in any of the colonies during the experiment. It can be concluded that screen...
Muhammad Ibrahim, Jawaria Ali Khan, Muhammad Sarwar Khan, Wasim Shehzad, Muhammad Avais, Ali Husnain, Naimatullah Khan, Muhammad Kamran Ameen and Abdullah Iqbal
...tudy was to evaluate the efficacy of some allopathic and herbal ingredients for treatment of subclinical mastitis and to test out how these ingredients can be used for enhancement of milk quality as well as their effects on the haematological values. Total 30 cows were selected for this study kept in different dairy farms in the premises of Lahore. Out of these 30 cows, 24 had subclinical mastitis and 6 were healthy. Cows suffering from subclinical mastitis we...
Sabri Unal1, ASır Er2, Erol Akkuzu1* and Lubomir Salek3
...dae) and to evaluate its efficacy on Macrosiphum rosae (Linnaeus) (Hemiptera: Aphididae) in Kastamonu, Turkey. Rearing of C. septempunctata was carried out at 21.3±4.00ºC and 78.8±9.44% relative humidity. The first, second, third and fourth larval instars of C. septempunctata consumed 20.3, 54.3, 108.2, and 232.7 M. rosea, respectively. The predation efficacy of the C. septempunctata was increased with the...
Kiran Afshan1*, Sarwat Jahan1 and Mazhar Qayyum2
...o improve the diagnostic efficacy of animal fascioliasis caused by Fasciola hepatica and Fasciola gigantica in Pakistan, we first time evaluated the diagnostic accuracy of commercially available bovine F. hepatica enzyme-linked immunosorbent assay (ELISA) for the detection of IgG against fascioliasis in sera of small ruminants. The result of current study indicated diagnostic accuracy of test 95.6%, while sensitivity and specificity of thi...
Tausif Ahmad1, Iahtasham Khan2, Saddaf Razzaq1, Saeed-ul-Hassan Khan1,* and Raheela Akhtar3
...PCR in order to test its efficacy in detecting Brucella in blood of infected animals. Initially a Brucella genus-specific bcsp31 genomic region based rPCR was used. This was followed by two species-specificrPCRs that detected IS711 genomic region of B. abortus and B. melitensis. Five (8.3%) serum samples from cattle and 1 from buffalo (1.6%) were found to be positive for B. abortus by RBPT. Four (6.6%) out of the 5 RBP...
Erum Bughio1, Ahmed Sultan Jatoi*1, Muzamil Memon2, Reema Bughio3, Pervez Ahmed Khoso4, Zafar Ali Khoso1 and Ali Asghar Baloch5
...of administration on the efficacy of live IBDV vaccines on broilers. A total of 120 broilers were randomly divided into six groups (20 birds in each) were coded A, B, C, D, E and F; vaccinated with various combinations of IBD through different routes. Results showed that the birds of different groups received different maternal antibodies did not induce any antibodies as recorded in all groups received vaccines at days 1, 9 or 12 exhibited similar pattern anti...
Salman Khalid1,*, Abdul Rehman2, Mohammad Yasin Amir1, Abdul Rehman1, Imran Sarfaraz1 and Muhammad Asif1
... on blood parameters and efficacy of different drugs on controlling tick’s infestation in commercial layer, a double blind randomized controlled trial was conducted. For therapeutic trials, the 80 birds (n= 60 infested with ticks, n= 20 healthy birds) were selected and divided into four groups (A, B, C and D), each comprising of 20 birds. Group A and B were treated with Ivermectin @ 0.2mg/Kg orally for two days and Fipronil (Spray at once), respectively....
Abdul Aziz Khan1,*, Shahid Munir2 and Irfan Ahmed2
...">We evaluated the field efficacy of coumatetralyl maize grain bait (0.0375%) against wild boar population in Fatima Jinnah Park, Islamabad. A total of 1838 kg bait was applied at 32 bait points, out of which 1627 kg was consumed by wild boars during 17 nights. The consumption of bait increased asymptotically and attained peak on the 7th night. The bait in-take, external and internal pathological symptoms were similar as has been described for warfa...
Wesam Hasan Mohamed Mady 1*, Bing Liu2, Dong Huang2, A. Arafa1, M.K. Hassan1, M.M. Aly1, Pucheng Chen2, Yongping Jiang2* and Hualan Chen2
...The pCAGG-optiH9 vaccine efficacy was evaluated by intramuscular immunization of SPF chickens with different concentrations of plasmid DNA and the sera were collected weekly post vaccination for antibody detection by HI test. All immunized chickens shown high HI antibody titers (9Log2) two weeks post-booster dose. The chickens were then challenged using homogenous AI H9N2 strain. During the course of infections, oropharyngeal and cloacal swabs were collected f...
K.N. Ahmed, S.H.A. Pramanik, M. Khatun A. Nargis M. R. Hasan
Efficacy of plant extracts in the suppression of insect pests and their effect on the yield of sunflower crop under different climatic conditions
...ra: Coccinellidae) . The efficacy of five kinds of plant extracts or botanicals viz., Neem (Azadirachta indica) seed oil, castor ( Ricinus communis) oil, a mixture of Neem seed oil and sesame oil, leaf extracts of custard apple (Annona squamosa ) and Bara Bishkatali ( Polygonum orienta) were tested against the pest infestation. The treatment of custard apple leaf extract produced the most favourable result in respect of pest control and crop yield. The other t...
Palash Mondal1 , Amitava Konar2 and N. Johnson Singh3
Evaluation of insecticidal schedules for the management of insect pests of potato
...dertaken to evaluate the efficacy of five treatments against insect pests of potato. The minimum population of aphids, whitefly and epilachna beetle was observed in the treatment T which received soil application of phorate followed by spraying of chlorpyriphos,imadicloprid and cartap hydrochloride, respectively at 40, 55 and 70 DAP than other treatments. Maximum yield of healty potato tuber was recorded in the plot treated with chlorpyriphos before planting a...
B. Ramanujam, R. D. Prasad, S. Sriram and R. Rangeswaran
Mass production, formulation, quality control and delivery of Trichoderma for plant disease management
...s in the formulation, bioefficacy also should be taken as a quality parameter to ensure availability of better products to farmers. Keywords : Trichoderma, mass production, formulation quality control, registration delivery, shelf-life, disease management.
...
1Bikash Ranjan Ray and 2Mrinal Kanti Dasgupta
Management of root holoparasite Aeginetia pedunculata of (Orobanchaceae), causing wilt of sugarcane by trap and catch crops
... field for their (crops) efficacy to deplete or recharge the parasite seeds in soil. Rice (Oryza sativa L.), maize (Zea mays L.), pearl millet (Pennisetum typhoides Staph. & Hubbard.), italian millet (Setaria italica (L.) Breauv.), black gram (Phaseolus mungo L.), dhaincha (Sesbania aculeata (Willd.) Pers.), sesame (Sesamum indicum L.), jute (Corchorus olitorius L.), pigeon pea (Cajanus cajan (L.) Millsp.), and groundnut (Arachis hypogaea L.) were found ef...
D. Sharmah, K.C. Deka and A.K. Phukan
Field evaluation of efficacy of some botanical dust against rice bug (Leptocorisa oratorius Fabr.)
...f ten days. The order of efficacy of the botanicals and their formulations were malathion followed by neem seed kernel powder, soap nut kernel powder, neem leaf powder, neem seed kernel powder + multani powder, soap nut kernel powder + multani powder, neem leaf powder + multani powder, neem leaf powder + ash, multani powder for the exposure period of 3, 7 and 10 days respectively.
...
M. S. A. Mamun and M. Ahmed
Integrated pest management in tea: prospects and future strategies in Bangladesh
... evaluation of field bio-efficacy and conservation of biological agents, cultural control measures, genetic techniques and sex pheromones technology. In tea husbandry, cultural control measures such as plucking, pruning, shade regulation, field sanitation, fertilizer application, manipulation or destruction of alternate hosts and selection of pest resistant/tolerant varieties and mechanical mechanisms like manual removal, heat treatments, light traps, use of b...
Amitava Konar, Kiran A. More and Pradip Mondal
Efficacy of some insecticides against cutworm and molecricket of potato in West Bengal
...onducted to evaluate the efficacy of some insecticides against soil pests i.e. cutworm (Agrotis ipsilon Hufner; Noctuidae: Lepidoptera) and molecricket (Gryllotalpa africana P. de Beau; Gryllotalpidae: Orthoptera) infesting potato at Adisaptagram Block Seed Farm, Mogra, Hooghly, West Bengal (India) during 2007-08 and 2008-09. The field trial was conducted in Randomized Block Design with six treatments and five replications. Among the various treatments for man...
Amitava Konar, S. Paul and Kiran A. More
Efficacy of different insecticidal treatment schedules against aphid and whitefly on brinjal
...n the present study, the efficacy of different insecticidal treatment schedules against aphid and whitefly on brinjal was studied by conducting two field experiments at 'Adisaptagram Block Seed Farm, Hooghly, West Bengal, India in two consecutive kharif seasons i.e., 2010 and 2011. The experiment was laid in RBD with seven treatment schedules and three replications. Among all the treatments soil application of phorate at transplanting, followed by foliar spray...
S.K. Sahoo
Incidence and management of mustard aphid (Lipaphis ery-simi Kaltenbach) in West Bengal
... evaluated for their bio-efficacy against L. erysimi, Dimethoate 30EC and Oxydemeton-methyl 25EC were proved to be more effective. The plots treated with Dimethoate and Oxydemeton-methyl recorded minimum aphid infestation in most of the observations, there by produced more yield ranging from 1151.6 to 1310.3 kg seed/ha. Incremental cost benefit ratio indicated that most favourable return was obtained under Dimethoate 30EC (1:20.8 & 1:13.3) followed by Oxyd...
Goutam Mondal
Plant growth promoting activity of some indigenous Tricho-derma isolates and their field performance against sheath blight of rice in old alluvial zone of North Bengal
...ignificantly. Again, the efficacy of the biocontrol agents was significantly greater in the block with green manured than the block without green manured. Application of hexaconazol 5% EC@ 2.0 ml litre-1 and carbendazim 50% WP @ 1.0 ml litre-1 also reduced the sheath blight disease incidence by 53.25% and 56.86% over the check plot respectively. It was interesting to observe that all biocontrol agents were found effective significantly than the fungicides. The...
M.S. Islam, M.Ali, and I. Ahmad
Efficacy of sedomil 72WP and recozeb 80WP to control die-back (Colletotrichum gloeosporioides) of tea in Bangladesh
...onducted to find out the efficacy of sedomil 72WP (mancozeb) and recozeb 80WP (mancozeb + metalaxyl) to control of dieback disease (Colletotrichum gloeosporioides) of tea in Bangladesh. The pathogen, C. gloeosporioides was isolated from the dieback infected tea twigs on PDA medium. Mycelial blocks of the isolated pathogen were transferred to PDA plates amended with sedomil 72WP (mancozeb) @ 720, 1080, 1440 and 1800 ppm and recozeb 80WP (mancozeb + metalaxyl) @...
A. Sajeena and T. Marimuthu
Efficacy, stability and persistence of Ganosol, a Ganoderma based fungicide against plant pathogens
...ined its 100% antifungal efficacy up to three months of storage. Surprisingly, spraying cowpea plants with the formulation as simultaneous spray reduced the number of lesions produced by Groundnut Bud Necrosis virus in cowpea by 88.39% when compared to the inoculated control, suggesting the antiviral potential of the formulation. ...
Abhijit Ghosal and M. L. Chatterjee
Bioefficacy of imidacloprid 17.8 SL against whitefly, Bemisia tabaci (Gennadius) in brinjal
...takeshi) to evaluate the efficacy of chloro-neonicotinoid as foliar application against whitefly, Bemisia tabaci (Gennadius). Imidacloprid 17.8 SL @ 50 g a.i./ha, was found superior against whiteflies among other treatments, received lowest number of whitefly population (1.55/plant) and offered maximum reduction of whiteflies (83.15%) as well as highest marketable fruit yield (146.50 q/ha). However, imidacloprid at lower doses showed nearly similar results. Th...
D.K. Hazra, Megha Pant, S.K. Raza and P. K. Patanjali
Formulation technology: key parameters for food safety with respect to agrochemicals use in crop protection
...ations to get desired bioefficacy which lead to accumulation of pesticide residues in food commodities along with environmental pollution. Conventional formulations, because of their characteristics i.e. dustiness and use of volatile organic solvents in their preparation maximize several problems like health haz-ards and environmental pollution etc. With the increasing awareness of toxic effects of conventional formulations, there is a significant trend toward...
S. Pal, H. Banerjee and N. N. Mandal
Efficacy of low dose of herbicides against weeds in transplanted kharif rice (Oryza sativa L.)
...gn="justify">Comparative efficacy of penoxsulum 24 SC against weeds in transplanted kharif rice was studied at Regional Research Sub-Station (New Alluvial Zone), Bidhan Chandra Krishi Viswavidyalaya, Chakdaha, Nadia, West Bengal. The experiment was laid out in a randomized block design with 7 treatments and 3 replications. The results revealed that the major weed flora associated with the transplanted rice during kharif season was mainly comprised of Echinochl...
K. K. Hegde and B. S. Nandihalli
Bioefficacy of some indigenous products in the management of okra fruit borers
...arwad to evaluate the bioefficacy of some indigenous products against okra fruit borers, Earias vittella Fabricius and Helicoverpa armigera Hubner. Different indigenous products like NSKE (5%), GCKE, sweet flag extract (5%), garlic extract (5%), cow dung (10%) and cow urine (10%) were tried individually and in combinations along with endosulfan (0.07%) and untreated control. Repeated sprays of GCKE recorded least number of eggs (1.40 eggs/plant) followed by NS...
Shrinivas Mudigoudra and Shekharappa
Evaluation of plant products aganist sorghum shoot fly, Atherigona soccata Rondani
...conducted to evalute the efficacy of different plant products against sorghum shoot fly during Kharif 2005 at University of Agricultural Sciences, Dharwad. The different plant products used in the study were, Vitex negundo, NSKE, Adathoda vesica, Pongamia glabra, Vinca rosea, Butea monosperma, Aloevera @ 5% concentration and were compared with carbofuran 3 G @ 30 kg. ha-1 to know its efficacy on shoot fly in sorghum ecosyste...
Sujoy Mondal and S. S. Ghatak
Bioefficacy of some indigenous plant extracts against epilachna beetle (Henosepilachna vigintioctopunctata Fabr.) infesting cucumber
...of water) to compare the efficacy of plant products. Results of the experiment revealed that Endosulfan 35 EC at 2mL-1 of water performed very well in reducing population build up of Henosepilachna vigintioctopunctata, Fabr. to the extent of 75.00%, while among the botanical pesticides, this was highest (76.37%) in seed extracts of Annona squamosa at 3mL-1 of water followed by 64.00% in Neem Azal at 5mL-1 of water and 57.00% in petroleum ether extracts of rhiz...
Shyam Singh and L.P. Awasthi
Plant products for the management of yellow mosaic disease of mungbean and urdbean
...was designed to test the efficacy of a few botanical extracts on the yellow mosaic of mug bean. Maximum reduction in disease incidence recorded were 66.70 and 63.65 percent in mungbean and Urdbean, respectively by eight sprays of Clerodendrum aculeatum. Whereas, eight sprays of Boerhaavia diffusa root extract could reduce the disease incidence by 60.27 and 58.20 per cent followed by Azadirachta indica leaf extract by 42.43 and 42.92 percent in mungbean and urd...
Sohail Ahmed, Muhammad Arshad and Babar Hassan*
...carried out to determine efficacy of synthetic resins on woods of three tree species to ward off subterranean termites. Three resins types in three concentrations were applied by brushing and dipping on wooden stakes which were exposed to termites’ for a period of 4 weeks in the field. Weight loss before and after resin treatment was indicative of effectiveness. Highest concentration of all resins significantly reduced the chances of termites’ infe...
1Sitesh Chatterjee, 1Chirasree Gangopadhyay and 2Santosh Kumar Roy
...15 to evaluate field bio-efficacy of new generation molecules against rice insect-pests. Control of pests in seedbed is relatively less expensive than transplanted main-field because of smaller area of nursery that can be managed better way as compared to transplanted field. In the present study, chlorantraniliprole granule was applied both in seedbed and transplanted field along with spraying of some new generation insecticides like indoxacarb, flubendiamide,...
Obaidullah1, Zafar Ali Shah1* and Sami Ullah2
...ve greater antibacterial efficacy against all three aforementioned strains of bacteria at 5 µg/ml, 40 µg/ml and 80 µg/ml concentrations versus their counterparts of Lapachol and above mentioned metallic salts....
Sidra Manzoor1,Asif Nadeem1,*, Masroor Ellahi Babar2, Wasim Shehzad1, Abu Saeed Hashmi1, Muhammad Imran1, Tanveer Hussain2, Abdul Wajid1 and Maryam Javed1
...o increase the selection efficacy of dairy animals, the effects of candidate polymorphism should further be screened in different environments and genetic backgrounds.
... 
Noor Islam1, Muhammad Amjad2, Ehsan ul Haq3, Elizabeth Stephen1 and Falak Naz4
Wesam Hasan Mohamed Mady1*, Bing Liu2, Dong Huang2, Abdel Satar Arafa1, Mohamed Khalifa Hassan1, Mona Mehrez Aly1, Pucheng Chen2, Yongping Jiang2* and Hualan Chen2
... evaluate the protective efficacy of the Egy-H5 plasmid DNA vaccine. The Egy-H5 plasmid DNA vaccine induced complete protection (100%) and there was no virus shedding in all chickens immunized with the Egy-H5 plasmid DNA vaccine. Taken together, the presented immunization approach is an alternative strategy to not only control the infections in chicken but also to safeguard public health....
Sumaira Maqsood1,*, Muhammad Afzal1, Muhammad Anjum Aqueel1, Abu Bakar Muhammad Raza1,Waqas Wakil2 andMuhammad Hussnain Babar3
Talha Nazir1,2,*, Muhammad Dildar Gogi2, Muhammad Zeeshan Majeed1, Waheed ul Hassan2, Abdul Hanan2 and Muhammad Jalal Arif2
...study assessed the field efficacy of six commercial insecticides viz.; Blaster 72.5%WP (imidacloprid + acephate), Bugatti 50%SC (imidacloprid + bifenthrin), Confidor 20%SL (imidacloprid), Jozer 202SL (imidacloprid + acetamiprid), Pouch 35%SC (pyriproxyfen + etofenprox) and Senator 41.6%EC (imidacloprid + pyriproxyfen) against sucking insect pest complex and also determined their side-effect on natural enemies of these insect pests such as ants, parasito...
Sumit K. Satpathi1, Suprakash Pal2*, Rupsanatan Mandal2, Nonigopal Shit2 and Ashutosh Sarkar3
...pests, biopesticides, bioefficacy, cost-benefit ratio, natural enemiesl
...
Muhammad Usman Qamar1, 2, Sidrah Saleem1, Usman Arshad1, Muhammad Farhan Rasheed3, Hasan Ejaz4, Naveed Shahzad5 and Shah Jahan6,*
Muhammad Abu Bakar1, Muhammad Anjum Aqueel1, Abu Bakar Muhammad Raza1, Muhammad Irfan Ullah1,*, Muhammad Arshad1, Mubasshir Sohail1,2 and Jaime Molina-Ochoa3,4
...was planned to check the efficacy of four different essential oils (neem oil, lemon oil, eucalyptus oil and orange oil) at different doses against percent mortality of Varroa mites. The essential oils were applied at two different doses (2.5ml and 5ml) and percent mortality data was recorded after 12, 24, 48 and 72 h of the application. As seen from results, all essential oils gave satisfactory control of Varroa mites except orange oil. The perce...
Ayesha Aihetasham1,*, Muhammad Saeed Akhtar1, Maryam Umer1, Khalid Zamir Rasib2 and Muhammad Imran Din3
Saleh S. Alhewairini1,* and Mahmoud M. Al-Azzazy1,2
...to plants.
... 
Ayesha Aihetasham1*, Khalid Zamir Rasib2, Syeda Rida Hasan1, Imran Bodlah3
...involves the entomocidal efficacy of different concentrations of aqueous leaf extracts of three medicinal plants viz., Carica papaya (paw paw), Helianthus annus (Sunflower) and Bougainvillea glabra (Paper flower) against Heterotermes indicola. The leaf extract of C. papaya caused highest mortality i.e. 100% of 10%, 5% and 3% concentration. Bougainvillea glabra and H. annus caused 100% mortality at 10% and 5% concentration while 96.4% mortality on 3% concentrat...
Ayesha Aihetasham1,*, Humaira Aziz1 and Khalid Zamir Rasib2
Tahira Kamal1*, Saeed-Ul-Hassan Khan2, Amir Bin Zahoor3, Khalid Naeem3, Muhammad Naeem Riaz1, Siddra Tayyab Akhtar4, Ghulam Muhammad Ali1*
...on in order to check the efficacy of test. Reaction was completed in 1 hr and 10 min at temperatures 600C. It was also tested in hot water bath on same temperature. Results were same in both techniques. Results showed that LAMP was more sensitive for FMD strain O (positive reaction upto -4 dilution) than others strains A and Asia -1 (positive reaction upto -3 dilutions). Further studies will be conducted to develop LAMP PCR as field test that does n...
Muhammad Rasool1,*, Muhammad Zahid1, Muhammad Ismail Khan1, Qadeem Khan2 and Khalid Khan1
... variability reduces the efficacy of vaccines prepared to a particular clone of HBV isolates.
... 
