strain

Vaccines already existed, but they didn't include the strains that were common in Africa and South Asia.

Ebola outbreak with uncommon strain erupts in Congo and Uganda: 65 deaths And that headline again from Ars Technica, a technology, science and politics website.

Ebola outbreak with uncommon strain erupts in Congo and Uganda: 65 deaths This headline was from the 15th of May, and since then the death toll has risen.

But that foundation is starting to show some signs of strain.

And what's amazing is that we have an Ebola vaccine now against the most common strain.

For example, if a large corporation patents—and therefore owns— a particular strain of genetically modified seeds, that can have harmful financial effects on small farmers who have to pay for licenses to plant the seeds each year.