Asking to be provided proof of recent vaccinations of the pet will also help ensure you have a responsible pet owner.And as @Steve Vaughan stated above, small dogs tend to do the most physical damage.

 - She is offering to pay more pet fee (I am already charging $200 upfront and $25 additional every month)- The house is old (1952), has hardwood floors, a new deck, and a large backyard- The tenant is required to get renter's insurance- I have asked her to provide a record of the dog being spayed/neutered as well as vaccine recordsIt may or may not be obvious that I would like to approve this tenant even with the dog.  

And it all has to do with local jobs and vacationers.If we pressume no vaccine will arrive before Q2 or Q3 2021 at the earliest and government imposed social distancing constraints combined with a reluctance by some folks to not want to re-engage in crowded activities - it all translates to a sizable reduction in visitors / revenue. 

Plus, the vaccine is getting rolled out which will curb the spread tremendously.

I don’t live in CA and as long as I have school aged children I would NEVER consider moving there due to the lack of vaccine exemptions.

. - Yes, however, there is a vaccine for TB, Hep B, Whooping cough etc.

They are working on a vaccine but reality is if they do get one it will be saved for future use or reoccurrence and not really for the outbreak right now.Spain did not head the warning to cancel large events and (flatten the curve) of spreading the virus and now they are on lockdown.

We are going to have to change many things until vaccine and or reliable treatments.

The amount of time it takes to make a vaccine available to the public4.

It’s a pandemic that no one has a vaccine for.