Why did 77 Ohio prisoners die of COVID-19, but just 10 in Pennsylvania?

Tuberculosis is still a rampant problem in the developing world. Doctors are looking for even more advanced ways to test for TB beyond the GeneXpert tests.

The California prison system is overwhelmed after adopting tough-on-crime laws with no improvement. New York adopted more tolerant policies and has decreased the state's crime rate and its prison population.

Slow test results make it difficult to stop the spread of tuberculosis. Using faster diagnostic technology and driving vans to rural areas in Tanzania, GeneXpert is making progress in treating this curable disease.

Although patients go to hospitals to receive medical care, many Americans will acquire infections that did not already have them. The United States as a whole has made modest progress at reducing the rates of hospital-acquired infections. Spearheading the efforts, the Veterans Affairs Medical Centers have devised anti-MRSA strategies to keep patients safe.

For decades, AIDS has taken the lives of millions of people and infected millions more worldwide. The key to reducing the effect of AIDS, and even potentially curing it, involves treating patients as early as possible after being diagnosed with HIV, before the disease damages organs. San Francisco General Hospital developed the RAPID program for this purpose, with the goal of “Getting to Zero” the number of new infections and deaths.

Two Iranian brothers worked as doctors to reform how Iran tackles HIV, moving the country toward the harm reduction approach. By providing clean needles and methadone, the doctors were able to lower infection rates, even in prisons.

Veterans who suffer from post traumatic stress disorder number about one-fourth of military personnel returning from Iraq and Afghanistan conflicts, roughly 500,000 veterans so far. Inmates in prisons nationwide train dogs as companions for these war veterans, providing a sense of healing for all.

Prisons in the United States are overcrowded with many non-violent offenders and the cost to keep them in jail consumes public budgets. Criminal justice reform has attracted bipartisan interest with diverse proposals to aid adjust the incarceration rate. The Urban Institute has developed an interactive “prison population forecaster,” which helps citizens to assess the impact of different policies.

In the developing world, intestinal worms stunt physical and mental growth, drain energy, and can inhibit school work for children. Deworm the World is a global campaign that lobbied the Delhi government to regularly distribute deworming pills to school children. The benefits decrease student absenteeism and increase cost-saving measures.

Two columns on how Iran is treating its massive epidemic of injecting drug use by tackling it as a health problem, effectively lowering H.I.V. rates among drug users using an approach to drugs known as harm reduction.