Why researchers say developing a vaccine for ASF will take years

Why researchers say developing a vaccine for ASF will take years

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Despite being a relatively stable virus, vaccine development for ASF has proven especially challenging

Some of the first attempts took place in the 1960s. Researchers in Spain injected pigs with a weakened virus that initially protected against ASF, but that ultimately caused the swine to come down with a chronic form of the disease, recounts Linda Dixon, who heads the ASF research group at the U.K.’s Pirbright Institute.