A coalition of public health groups has set a deadline of 2030 to do away with dog-mediated rabies, which accounts for 99% of cases of the dreaded disease. While rabies is preventable, it is endemic in over 150 countries and kills 59,000 people each year. 

After decades of work, the finish line was in sight for victory against guinea worm, an excruciatingly painful parasite. That success is now threatened by hundreds of cases among dogs in Chad. Scientists are desperate to stop it in its tracks before it spreads widely to…