text: const mongoose = require('mongoose');
  
  const vacunaSchema= mongoose.Schema({
      _id: mongoose.Schema.Types.ObjectId,
      nombre: {
          type: String, require: true, unique:true
      }, 
      descripcion: {
          type: String
      },
      imagen: {
          type: String
      },
      categoria: {
          type: String
      }
  });
  
  module.exports = mongoose.model('Vacuna', vacunaSchema, 'Vacunas');
  