Is Sequelize model.build(req.body) safe for injections?

I am new to Sequelize (a node.js ORM) and wondering if the following code is safe:

var models = require('../models');
var router = require('express').Router();

router.post('/', function(req, res, next){
  models.Account
    .create(req.body)       // <-- THIS IS WHAT MY QUESTION IS ABOUT, IS THIS SAFE?
    .then(function(result){
      res.status(200)
        .send(result)
        .end();
    }).catch(next);
});

If you are using this, could this be unsafe in some way? The other solution would be:

var models = require('../models');
var router = require('express').Router();

router.post('/', function(req, res, next){
  models.Account
    .create({
      username:    req.body.username, // <-- THIS IS MORE VERBOSE BUT PROBABLY SAFER?
      accountname: req.body.accountname,
      level:       req.body.level
    })
    .then(function(result){
      res.status(200)
        .send(result)
        .end();
    }).catch(next);
});

So basically my question is: is it safe to use the full request body as an input to the model.create() function (and model.set() and model.build())?