Can salmonella be contagious?

YES! If proper hand washing is not used there is possible fecal to food or fecal to mouth contamination!

Hope this is helpful
Dr Z.
Salmonella - yes,but. “Person-to-person transmission of salmonella occurs when an infected person's feces, unwashed from his or her hands, contaminates food during preparation or comes into direct contact with another person.” REF: http://www.idph.state.il.us/public/hb/hbsam.htm .

Related Questions

Is salmonella something contagious?

Very. Salmonella: pathogen (disease causing) bacteria, can cause severe diarrheal illness, severe dehydration, other problems. Some types cause typhoid fever (not common in U.S.). Dirty water, and contaminated food mostly. Spread fecal/oral source is mostly undercooked eggs and poultry. Even if most isn't contam, assume it is. Don't share utensils, cutting boards for cooked and uncooked. Wash hands. Read more...
Yes. Salmonella is spread by the fecal oral route from infected animals or humans. Food and water borne spread after contamination is common. Read more...

When is salmonella no longer contagious. My son had non severe diahrrea for about two days, vomited twice had no pain fever or temp then had a rash.

Culture. A stool,culture that is negative will prove that your son is no longer contagious. Do you know for sure it is salmonella that is the cause for his illness? A rash may indicate other illnesses. Have him checked. Read more...
Salmonella. Most people return to work/ school when diarrhea stops. Food or health care workers or children in daycare must obtain local/ state health department approval. Infected person can carry the bacteria for few days or several months. REF: https://www.health.ny.gov/diseases/communicable/salmonellosis/fact_sheet.htm. Read more...