These stages are known as primary, latent and active. Need a break? Play the USA TODAY Daily Crossword Puzzle. In the primary stage of TB infection, most people don't have symptoms or experience ...

The microbes associated with these infections enter a latent stage during which they quietly hide in cells, playing the long game to evade capture and ensure their own survival. But a lack of ...

The microbes associated with these infections enter a latent stage during which they quietly hide in cells, playing the long game to evade capture and ensure their own survival. But a lack of ...

The microbes associated with these infections enter a latent stage during which they quietly hide in cells, playing the long game to evade capture and ensure their own survival. But a lack of natural ...

The microbes associated with these infections enter a latent stage during which they quietly hide in cells, playing the long game to evade capture and ensure their own survival. But a lack of ...

These stages are known as primary, latent and active. In the primary stage of TB infection, most people don't have symptoms or experience only mild ones like a low-grade fever, fatigue or coughing.