We are always scared with that organic is less safe. The argument goes that because organic farmers don't use pesticides, parasiticides, fungicides or antibiotics, organic crops or animals will be a risk for health. I always thought that it is nonsense, but it is hard to convince folks just from your gut feeling. But again and again you find evidence that organic is even safer. The latest survey of that kind says:
The results of our study suggest that within this poultry company, the prevalence of fecal Salmonella was lower in certified-organic birds than in conventionally raised birds, and the prevalence of antimicrobial-resistant Salmonella was also higher in conventionally raised birds than in certified-organic birds.
What is perhaps more alarming is that 39.7 percent of the salmonella found in the conventional birds had resistance to no fewer than six different antibiotics. None of the salmonella from the organic birds showed antibiotic resistance.
Organic egg sales are progressing says The Organic Man
Also there is a nice blogpost on this at grist