import copy


def household_params() -> dict:
    """A set of default parameters which are the base for running tests."""
    params = {'outside_household_infectivity_scaling': 0.7,
              'overdispersion': 0.32,
              'asymptomatic_prob': 0.2,
              'asymptomatic_relative_infectivity': 0.35,
              'infection_reporting_prob': 0,
              'reduce_contacts_by': 0.3,
              'starting_infections': 1,
              'symptom_reporting_delay': 1,
              'incubation_period_delay': 5,
              'household_pairwise_survival_prob': 0.2,
              'contact_tracing_success_prob': 0,
              'test_before_propagate_tracing': False}
    return copy.deepcopy(params)