Not necessarily.
This is especially important when interpreting dramatic social-media photographs.
Many things can resemble worms, including food fibers, mucus, plant material, undigested food, and other biological structures. A photograph alone is generally not enough to determine whether something is a parasite.
Even when an object genuinely appears worm-like, identifying a parasite requires appropriate examination. Medical professionals may use stool testing, microscopy, blood tests, imaging, or other diagnostic methods depending on the suspected infection.
So viral photographs should not be used as a substitute for medical diagnosis.
How to Reduce Your Risk
You do not need to become afraid of ordinary foods. A few basic food-safety habits can dramatically reduce the likelihood of foodborne infections.
Cook meat and seafood thoroughly. Follow recommended internal temperatures rather than relying only on color.
Wash fresh produce. Rinse fruits and vegetables under clean running water, especially when they will be eaten raw.
Avoid untreated water. Drinking water from streams, lakes, or other untreated sources can expose you to parasites and other pathogens.
Be careful with raw animal products. Raw or undercooked fish, meat, and shellfish carry greater microbiological risks than properly cooked foods.